This article is about an Antarctica sedimentary sequence. For the geological feature, see Mesa. For other uses, see Meseta.
The La Meseta Formation is a sedimentary sequence deposited during the Eocene on Seymour Island off the coast of the Antarctic Peninsula. It is noted for its fossils, which include both marine organisms and the only terrestrial vertebrate fossils from the Cenozoic of Antarctica.[2][4]
The terrestrial environment surrounding the deposition area is thought to have been a temperate polar forest, including podocarp and araucarian conifers, as well as Nothofagus.[5][6] Most of the fossilized woods and flowers discovered on Seymour Islands consist of extinct species of conifer trees and lilies during warm climate.[7][8]
Acantilados II, Campamento, Cucullaea I Allomember (Telm 4) and Submeseta Member (Telm 7).
A Brachyodont lower right molar fragment, probably m1 or m2, preserves a portion of the talonid with most of the lingual side (MLP 13-I-25-1) and left M3 incomplete (MLP 95-I-10-6).
MLP 95-1-10-1, a fragment of a right mandibular ramus with a complete m4 and the posterior alveolus of m3 and MLP 88-1-1-1, an edentulous left mandibular ramus with the alveoli for p3-m4.
^Zinsmeister, Jeffrey D. Stilwell ; William J. (1992). Molluscan systematics and biostratigraphy : Lower Tertiary La Meseta Formation, Seymour Island, Antarctic Peninsula. Washington, DC: American Geophysical Union. ISBN978-0875907703.{{cite book}}: CS1 maint: multiple names: authors list (link)
^ abcPezzetti, T.F.; KRISSEK, L.A (1986). "Re-evaluation of the Eocene La Meseta Formation of Seymour Island, AntarcticPeninsula": 75. {{cite journal}}: Cite journal requires |journal= (help)
^ abcdReguero, Marcelo A.; Sergio A. Marenssi; Sergio N. Santillana (2012). "Weddellian marine/coastal vertebrates diversity from a basal horizon (Ypresian, Eocene) of the Cucullaea I Allomember, La Meseta formation, Seymour (Marambio) Island, Antarctica". Rev. Peru. Biol. 19: 275–284.
^Vega, Greta C.; Olalla-Tárraga, Miguel Ángel (2020), "Past changes on fauna and flora distribution", Past Antarctica, Elsevier, pp. 165–179, doi:10.1016/b978-0-12-817925-3.00009-4, ISBN978-0-12-817925-3, retrieved 2023-09-20
^Pujana, Roberto R.; Santillana, Sergio N.; Marenssi, Sergio A. (January 2014). "Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae-dominated forests". Review of Palaeobotany and Palynology. 200: 122–137. doi:10.1016/j.revpalbo.2013.09.001. hdl:11336/17151.
^Reguero, Marcelo A.; Marenssi, Sergio A.; Santillana, Sergio N. (May 2002). "Antarctic Peninsula and South America (Patagonia) Paleogene terrestrial faunas and environments: biogeographic relationships". Palaeogeography, Palaeoclimatology, Palaeoecology. 179 (3–4): 189–210. doi:10.1016/S0031-0182(01)00417-5.
^Pujana, R. R., Wilf, P., & Gandolfo, M. A. (2020). Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia. PhytoKeys, 156, 81–102. https://doi.org/10.3897/phytokeys.156.54175
^ abFriis, Else M.; Iglesias, Ari; Reguero, Marcelo A.; Mörs, Thomas (2017-08-01). "Notonuphar antarctica, an extinct water lily (Nymphaeales) from the Eocene of Antarctica". Plant Systematics and Evolution. 303 (7): 969–980. doi:10.1007/s00606-017-1422-y. ISSN 2199-6881. S2CID 254058613.
^Chornogubsky, L. (2009). A Reassessment of Antarctic Polydolopid Marsupials (Middle Eocene, La Meseta Formation). Antarctic Science.
^Goin, F. J.; Zimicz, N.; Reguero, M. A.; Santillana, S. N.; Marenssi, S. A.; Moly, J. J. (October 2007). "New marsupial (Mammalia) from the Eocene of Antarctica, and the origins and affinities of the Microbiotheria". Revista de la Asociación Geológica Argentina. 62 (4): 597–603. ISSN 1851-8249. Retrieved 2017-02-12.
^Tambussi, Claudia & Acosta Hospitaleche, Carolina & Reguero, Marcelo & Marenssi, Sergio. (2006). Late Eocene penguins from West Antarctica: Systematics and biostratigraphy. Geological Society London Special Publications. 258. 145-161. 10.1144/GSL.SP.2006.258.01.11.
^ abHospitaleche, C. A., & Reguero, M. (2011). Taxonomic status of the Eocene penguinsOrthopteryx gigasWiman, 1905 andIchtyopteryx gracilisWiman, 1905 from Antarctica. Alcheringa: An Australasian Journal of Palaeontology, 35(3), 463–466. https://doi.org/10.1080/03115518.2011.527476
^Uchman, Alfred; Andrzej GAŹDZICKI (2006). "New trace fossils from the La Meseta Formation (Eocene) of Seymour Island, Antarctica". Pol. Polar Res. 27: 153–170.
^Long, Douglas. (1992). Sharks from the La Meseta Formation (Eocene), Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology. 12. 11-32. 10.1080/02724634.1992.10011428.
^ abcdefghGoin, Francisco J. New Discoveries of "Opposum-Like" Marsupials from Antarctica (Seymour Island, Medial Eocene). OCLC 1196811246.
^ abcdefgh"Antarctic Paleontological Heritage: Late Cretaceous–Paleogene vertebrates from Seymour (Marambio) Island, Antarctic Peninsula". Advances in Polar Science. 30. 20 August 2019. doi:10.13679/j.advps.2019.0015.
^Francisco J. Goin; Emma C. Vieytes; Javier N. Gelfo; Laura Chornogubsky; Ana N. Zimicz; Marcelo A. Reguero (2020). "New metatherian mammal from the early Eocene of Antarctica". Journal of Mammalian Evolution. 27 (1): 17–36. doi:10.1007/s10914-018-9449-6. S2CID 91932037.
^ abcGelfo, Javier N.; Goin, Francisco J.; Bauzá, Nicolás; Reguero, Marcelo (30 September 2019). "The fossil record of Antarctic land mammals: Commented review and hypotheses for future research". Advances in Polar Science: 274–292. doi:10.13679/j.advps.2019.0021.
^Cenizo, Marcos; Noriega, Jorge I.; Reguero, Marcelo A. (2016-01-12). "A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons". Journal of Ornithology. 157 (3): 885–894. doi:10.1007/s10336-015-1316-0. hdl:11336/54190. ISSN 2193-7192.
^Acosta Hospitaleche, Carolina; Jones, Washington (2024). "Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island". Palaeontologia Electronica. doi:10.26879/1340.
^Mörs, Thomas; Reguero, Marcelo; Vasilyan, Davit (2020-04-23). "First fossil frog from Antarctica: implications for Eocene high latitude climate conditions and Gondwanan cosmopolitanism of Australobatrachia". Scientific Reports. 10 (1): 5051. Bibcode:2020NatSR..10.5051M. doi:10.1038/s41598-020-61973-5. ISSN 2045-2322. PMC7181706. PMID 32327670.
^Engelbrecht; Mörs; Reguero; Kriwet, Andrea; Thomas; Marcelo A.; Jürgen (May 2017). "A new saw shark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus". Historical Biology. 29 (6): 841–853. doi:10.1080/08912963.2016.1252761. PMC5447807. PMID 28579693.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Bieńkowska-Wasiluk, M.; Bonde, N.; Møller, P. R.; Gaździcki, A. (2013). "Eocene relatives of cod icefishes (Perciformes: Notothenioidei) from Seymour Island, Antarctica". Geological Quarterly. 57 (4). ISSN 1641-7291.
Further readingedit
R. A. Askin. 1997. Eocene-?Earliest Oligocene terrestrial palynology of Seymour Island, Antarctica. : 993-996. The Antarctic Region: Geological Evolution and Processes 993-996
M. A. Bitner. 1991. A supposedly new brachiopod from the Paleogene of Seymour Island, West Antarctica. Polish Polar Research 12(2):243-246
D. B. Blake and R. B. Aronson. 1998. Eocene stelleroids (Echinodermata) at Seymour Island, Antarctic Peninsula. Journal of Paleontology 72(2):339-353
M. Bond, M. A. Reguero, S. F. Vizcaino and S. A. Marenssi. 2006. A new 'South American ungulate' (Mammalia: Litopterna) from the Eocene of the Antarctic Peninsula. Geological Society, London, Special Publications 258:163-176
J. A. Case. 1988. Paleogene floras from Seymour Island, Antarctic Peninsula. Geology and Paleontology of Seymour Island Antarctic Peninsula 523-540
M. M. Cenizo. 2012. Review of the putative Phorusrhacidae from the Cretaceous and Paleogene of Antarctica: new records of ratites and pelagornithid birds. Polish Polar Research 33(3):225-244
A. L. Cione, M. de las Mercedes Azpelicueta, and D. R. Bellwood. 1995. An oplegnathid fish from the Eocene of Antarctica. Palaeontology 37(4):931-940
A. L. Cione and M. A. Reguero. 1994. New records of the sharks Isurus and Hexanchus from the Eocene of Seymour Island, Antarctica. Proceedings of the Geologists' Association 105:1-14
J. Kriwet. 2005. Additions to the Eocene Selachian Fauna of Antarctica with Comments on Antarctic Selachian Diversity. Journal of Vertebrate Paleontology 25(1):1-7
S. A. Marenssi, M. A. Regeuro, S. N. Santillana and S. F. Vizcaino. 1994. Eocene land mammals from Seymour Island, Antarctica: palaeobiogeographical implications. 6(1):3-15
I. Poole, A. M. W. Mennega, and D. J. Cantrill. 2003. Valdivian ecosystems in the Late Cretaceous and Early Tertiary of Antarctica: further evidence from myrtaceous and eucryphiaceous fossil wood. Review of Palaeobotany and Palynology 124:9-27
R. R. Pujana, S. N. Santillana, and S. A. Marenssi. 2014. Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae-dominated forests. Review of Palaeobotany and Palynology (200)122-137
S. F. Vizcaino, M. A. Reguero, S. A. Marenssi and S. N. Santillana. 1997. New land mammal-bearing localities from the Eocene La Meseta Formation, Seymour Island, Antarctica. The Antarctic Region: Geological Evolution and Processes 997-1000
January 01, 1970
meseta, formation, this, article, about, antarctica, sedimentary, sequence, geological, feature, mesa, other, uses, meseta, sedimentary, sequence, deposited, during, eocene, seymour, island, coast, antarctic, peninsula, noted, fossils, which, include, both, ma. This article is about an Antarctica sedimentary sequence For the geological feature see Mesa For other uses see Meseta The La Meseta Formation is a sedimentary sequence deposited during the Eocene on Seymour Island off the coast of the Antarctic Peninsula It is noted for its fossils which include both marine organisms and the only terrestrial vertebrate fossils from the Cenozoic of Antarctica 2 4 La Meseta FormationStratigraphic range Eocene PreꞒ Ꞓ O S D C P T J K Pg NTypeGeological formationUnit ofSeymour Island Group 1 UnderliesWeddell FormationOverliesLopez de Bertodano Sobral amp Cross Valley FormationsThickness557 m 1 827 ft 2 LithologyPrimarySandstone claystoneOtherSiltstone mudstone conglomerateLocationCoordinates64 14 21 782 S 56 36 11 69 W 64 23938389 S 56 6032472 W 64 23938389 56 6032472 3 Approximate paleocoordinates63 42 S 61 30 W 63 7 S 61 5 W 63 7 61 5RegionSeymour IslandCountryAntarcticaGeologic map of Seymour Island Antarctica with La Meseta Formation in dark yellowContents 1 Description 2 Paleoenvironment 3 Paleobiota 3 1 Mammals 3 1 1 Meriduingulata 3 1 2 Cetacean 3 1 3 Metatherians 3 1 4 Other mammals 3 2 Birds 3 2 1 Sphenisciformes 3 2 2 Other birds 3 3 Amphibians 3 4 Fish 3 4 1 Chondrichthyes 3 4 1 1 Carcharhinidae 3 4 1 2 Hexanchidae 3 4 1 3 Lamnidae 3 4 1 4 Mitsukurinidae 3 4 1 5 Odontaspididae 3 4 1 6 Orectolobidae 3 4 1 7 Pristiophoridae 3 4 1 8 Squalidae 3 4 2 Actinopterygii 3 4 2 1 Xiphiidae 3 4 2 2 Notothenioids 3 5 Cephalopods 3 6 Plants 4 See also 5 References 6 Further readingDescription editLa Meseta Formation lies unconformably on the Cretaceous Lopez de Bertodano Formation It is an approximately 557 metres 1 827 ft thick sequence of poorly consolidated sandstones and siltstones The depositional environment was probably coastal deltaic or estuarine in character The top of the sequence is an erosional unconformity to Pleistocene glacial gravels 3 2 La Meseta Formation is one of the sequences that make up the fill of the Late Jurassic to Paleogene James Ross Basin 3 Paleoenvironment editThe terrestrial environment surrounding the deposition area is thought to have been a temperate polar forest including podocarp and araucarian conifers as well as Nothofagus 5 6 Most of the fossilized woods and flowers discovered on Seymour Islands consist of extinct species of conifer trees and lilies during warm climate 7 8 Paleobiota editLa Meseta Formation is extremely rich in fossils Among mammals the meridiungulata Antarctodon and Trigonostylops have been found in the formation 9 10 as well as marsupial Derorhynchidae Microbiotheria and polydolopimorphia 11 12 It is famous for its penguin fossils for example the two genera Archaeospheniscus and Palaeeudyptes 13 14 Other bird fossils include Dasornis a genus of pseudotooth birds There is also an abundance of trace fossils Diplocraterion Helminthopsis Muensteria Oichnus Ophiomorpha Skolithos Teredolites and Zapfella have been described 15 Over 35 species and 26 families of fish which includes sharks have been described from the Ypresian Cucullaea bed 3 16 Mammals edit Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon Notes Uncertain or tentative taxa are in small text crossed out taxa are discredited Meriduingulata edit Astrapotheria Taxa Species Locality Stratigraphic position Material Notes Images Antarctodon A sobrali Locality DVP 2 84 and IAA 1 90 Cucullaea I allomember Telm 5 MLP 08 XI 30 1 an isolated right p4 or m1 An astrapothere Trigonostylops T indet Cucullaea I allomember Telm 5 An astrapothere Litopterna Taxa Species Locality Stratigraphic position Material Notes Images Notiolofos N arquinotiensis Locality IAA 1 13 and DPV 16 84 Acantilados II Campamento Cucullaea I Allomember Telm 4 and Submeseta Member Telm 7 A Brachyodont lower right molar fragment probably m1 or m2 preserves a portion of the talonid with most of the lingual side MLP 13 I 25 1 and left M3 incomplete MLP 95 I 10 6 A sparnotheriodontid litoptern N regueroi Locality IAA 2 16 Lower coquina bed of Cucullaea I Allomember IAA PV 173 Isolated complete left m3 Victorlemoinea V sp Cucullaea I allomember Telm 5 A sparnotheriodontid litoptern Cetacean edit Taxa Species Locality Stratigraphic position Material Notes Images Basilosaurus undetermined Llanocetus L denticrenatus Locality DPV 10 84 and DVP 13 24 Unit III Member and Telm 7 A partial mandible with two teeth specimen USNM 183022 and an endocast of the braincase a toothed baleen whale nbsp Zygorhiza undetermined Metatherians edit Derorhynchidae Taxa Species Locality Stratigraphic position Material Notes Images Derorhynchus 17 D minutus 17 Locality IAA 1 90 Allomember Cucullaea I Telm 5 MLP 96 1 5 44 incomplete right horizontal ramus of the dentary fragment with m2 3 Pauladelphys 17 18 P juanjoi 17 18 Locality IAA 2 95 and IAA 1 90 Allomember Cucullaea I Telm 5 An isolated lower molar MLP 95 1 10 2 and an upper left molar MLP 96 1 5 44 Xenostylos X peninsularis 17 Locality IAA 1 90 Allomember Cucullaea I Telm 5 MLP 94 111 15 10 an isolated upper right molar Microbiotheria Taxa Species Locality Stratigraphic position Material Notes Images Marambiotherium 17 M glacialis 17 Locality IAA 1 90 and RV 8200 Cucullaea I allomember Telm 5 MLP 95 1 10 1 a fragment of a right mandibular ramus with a complete m4 and the posterior alveolus of m3 and MLP 88 1 1 1 an edentulous left mandibular ramus with the alveoli for p3 m4 Members of Microbiotheria Woodburnodon W casei Locality IAA 1 95 Cucullaea I allomember Telm 5 MLP 04 III 1 2 an isolated worn upper right molar M2 or M3 Polydolopimorphia Taxa Species Locality Stratigraphic position Material Notes Images Antarctodolops A dailyi Locality IAA 2 95 DPV 2 84 and DPV 6 84 Cucullaea I allomember Telm 5 UCR 20910 a left dentary with p3 m2 A polydolopimorphian metatherian A mesetaense Locality IAA 1 90 and DPV 6 84 Cucullaea I allomember Telm 5 Right dentary fragments Perrodelphys P coquinense 17 Locality IAA 1 90 Cucullaea I allomember Telm 5 MLP 96 1 5 11 an isolated left lower molar A polydolopimorphian metatherian Polydolops P dailyi Locality IAA 1 90 amp DPV 3 84 Cucullaea I allomember Telm 5 A polydolopimorphian metatherian P seymouriensis Locality IAA 1 90 amp DPV 3 84 Cucullaea I allomember Telm 5 P thomasi Locality IAA 1 90 amp DPV 3 84 Cucullaea I allomember Telm 5 Pujatodon P ektopos 19 Locality IAA 1 90 Cucullaea I Allomember Telm 5 Specimen MLP 14 I 10 20 a lower left molar m2 or m3 partially worn A polydolopimorphian metatherian Other mammals edit Taxa Species Locality Stratigraphic position Material Notes Images Sudamerica S ameghinoi Locality IAA 1 90 upper level Cucullaea I Allomember MLP 95 I 10 5 anterior part of a left dentary with the rodent like incisor partially preserved A gondwanathere Meridiolestida 20 Indeterminate Locality IAA 1 90 upper level Cucullaea I Allomember A single tooth now lost 20 Xenarthra Indeterminate Locality S124 Cucullaea I Allomember Telm 4 TMM 44190 1 left metacarpal II and A phalanx and a partial tooth 20 Birds edit Sphenisciformes edit Taxa Species Locality Stratigraphic position Material Notes Images Anthropornis A grandis Locality IAA 4 12 IAA 1 90 DPV 13 84 and DVP 2 84 Telm 4 member Telm 7 member and Submeseta Allomember Humerus MLP 93 X 1 4 proximal epiphysis MLP 82 IV 23 4 proximal epiphysis MLP 83 I 1 190 proximal epiphysis and MLP 88 I 1 463 proximal epiphysis Relatives of giant penguins nbsp A nordenskjoldi 18 Submeseta Allomember Humerus MLP CX 60 25 proximal epiphysis MLP 83 V 30 5 diaphysis and MLP 93 X 1 104 complete humerus nbsp Archaeospheniscus A lopdelli Submeseta Allomember Relatives of giant penguins A wimani Submeseta Allomember Delphinornis 18 D arctowskii DPV 14 84 Cucullaea I Allomember Telm 7 D graclis DPV 14 84 Cucullaea I Allomember Telm 7 D larseni DPV 13 84 and DPV 14 84 Cucullaea I Allomember Telm 5 and Telm 7 and Submeseta Allomember Marambiornis M exilis DVP 2 84 IAA 1 12 and ZPAL 4 Telm 7 Member A limb element right tarsometatarsus An early relative of penguin Mesetaornis M polaris Telm 7 member A nearly complete right femur and two distal left tibiotarsi Orthopteryx O gigas 14 Palaeeudyptes P antarcticus Cucullaea I Allomember Telm 3 Telm 4 Telm 5 and Telm 7 and Submeseta Allomember The narrow flippered penguin nbsp P gunnari 18 DVP 2 84 DVP 10 84 DVP 13 84 DVP 14 84 DVP 15 84 and ZPAL 4 Cucullaea I Allomember Telm 3 Telm 5 and Telm 7 and Submeseta Allomember Multiple specimens consist of coracoids ulna and humerus P klekowskii DVP 2 84 DVP 10 84 DVP 13 84 DVP 14 84 DVP 16 84 and ZPAL 4 Cucullaea I Allomember Telm 3 Telm 5 and Telm 7 and Submeseta Allomember Several specimens consist of humerus coracoid ulna and tibiotarsus nbsp Wimanornis W seymourensis DPV 14 84 Cucullaea I Allomember Telm 7 and Submeseta Allomember Tonniornis T mesetaensis DPV 14 84 Cucullaea I Allomember Telm 7 and Submeseta Allomember T minimum DPV 14 84 Cucullaea I Allomember Telm 7 and Submeseta Allomember Other birds edit Taxa Species Locality Stratigraphic position Material Notes Images Antarctoboenus 21 A carlinii IAA 2 95 locality Cucullaea I Allomember MLP 95 I 10 8 distal end of left tarsometatarsus A stem Falconiform Dasornis D sp A pseudotooth bird Phorusrhacidae Indeterminate Locality IAA 2 13 Cucullaea I Allomember A right ungual phalanx A large flightless cariamiform bird 22 Amphibians edit Taxa Species Locality Stratigraphic position Material Notes Images Calyptocephalella C sp 23 Locality IAA 2 95 Cucullaea I Allomember Telm 5 The fragmentary right ilium NRM PZ B282 and a skull bone NRM PZ B281 Calyptocephalellid frog Fish edit Chondrichthyes edit Carcharhinidae edit Taxa Species Locality Stratigraphic position Material Notes Images Scoliodon S sp Hexanchidae edit Taxa Species Locality Stratigraphic position Material Notes Images Heptranchias H howellii Hexanchus 18 H sp 18 Lamnidae edit Taxa Species Locality Stratigraphic position Material Notes Images Isurus I praecursor Lamna L cf nasus Otodus O auriculatus Mitsukurinidae edit Taxa Species Locality Stratigraphic position Material Notes Images Striatolamia S macrota Anomotodon A multidenticulata Odontaspididae edit Taxa Species Locality Stratigraphic position Material Notes Images Odontaspis O rutoti O winkleri Orectolobidae edit Taxa Species Locality Stratigraphic position Material Notes Images Stegostoma S cf varium Pseudoginglymostoma P cf P brevicaudatum Pristiophoridae edit Taxa Species Locality Stratigraphic position Material Notes Images Pristiophorus P lanceolatus P laevis 24 Squalidae edit Taxa Species Locality Stratigraphic position Material Notes Images Squalus S weltoni S woodburnei Actinopterygii edit Xiphiidae edit Taxa Species Locality Stratigraphic position Material Notes Images Xiphiorhynchus 18 X cf sp Notothenioids edit Taxa Species Locality Stratigraphic position Material Notes Images Mesetaichthys M jerzmanskae Fragmentary skull bones and vertebra An early member of the Notothenioidei the dominant marine fish of Antarctica today Initially assigned to the Gadiformes 25 Cephalopods edit Taxa Species Locality Stratigraphic position Material Notes Images Antarcticeras A nordenskjoeldi NRM 8 below IAA 1 90 Ungulate Site Cucullaea I shell bed Telm 4 A fragmentary preserved straight shell An enigmatic cephalopod that is either considered a descendant of the orthocerids or an oegopsid squid Euciphoceras E sp NRM 8 below IAA 1 90 Ungulate Site Cucullaea I shell bed Telm 4 A fragmentary preserved straight shell A nautiloid Plants edit Taxa Species Locality Stratigraphic position Material Notes Images Agathoxylon A pseudoparenchymatosum Locality 5 Cucullaea I allomember Fossilized wood nbsp fossilized seed of Notonuphar Cupressinoxylon C hallei Localities 4 5 6 and 7 Campamento and Cucullaea I allomember Fossilized wood Notonuphar N antarctica IAA 2 95 Cucullaea I Allomember Telm 5 Fossilized seeds A water lily Nelumbo Nelumbo sp 8 Protophyllocladoxylon P francisiae Phyllocladoxylon P antarcticum P pooleaeSee also edit nbsp Geology portal nbsp Paleontology portal List of fossiliferous stratigraphic units in AntarcticaReferences edit Zinsmeister Jeffrey D Stilwell William J 1992 Molluscan systematics and biostratigraphy Lower Tertiary La Meseta Formation Seymour Island Antarctic Peninsula Washington DC American Geophysical Union ISBN 978 0875907703 a href Template Cite book html title Template Cite book cite book a CS1 maint multiple names authors list link a b c Pezzetti T F KRISSEK L A 1986 Re evaluation of the Eocene La Meseta Formation of Seymour Island AntarcticPeninsula 75 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help a b c d Reguero Marcelo A Sergio A Marenssi Sergio N Santillana 2012 Weddellian marine coastal vertebrates diversity from a basal horizon Ypresian Eocene of the Cucullaea I Allomember La Meseta formation Seymour Marambio Island Antarctica Rev Peru Biol 19 275 284 Vega Greta C Olalla Tarraga Miguel Angel 2020 Past changes on fauna and flora distribution Past Antarctica Elsevier pp 165 179 doi 10 1016 b978 0 12 817925 3 00009 4 ISBN 978 0 12 817925 3 retrieved 2023 09 20 Pujana Roberto R Santillana Sergio N Marenssi Sergio A January 2014 Conifer fossil woods from the La Meseta Formation Eocene of Western Antarctica Evidence of Podocarpaceae dominated forests Review of Palaeobotany and Palynology 200 122 137 doi 10 1016 j revpalbo 2013 09 001 hdl 11336 17151 Reguero Marcelo A Marenssi Sergio A Santillana Sergio N May 2002 Antarctic Peninsula and South America Patagonia Paleogene terrestrial faunas and environments biogeographic relationships Palaeogeography Palaeoclimatology Palaeoecology 179 3 4 189 210 doi 10 1016 S0031 0182 01 00417 5 Pujana R R Wilf P amp Gandolfo M A 2020 Conifer wood assemblage dominated by Podocarpaceae early Eocene of Laguna del Hunco central Argentinean Patagonia PhytoKeys 156 81 102 https doi org 10 3897 phytokeys 156 54175 a b Friis Else M Iglesias Ari Reguero Marcelo A Mors Thomas 2017 08 01 Notonuphar antarctica an extinct water lily Nymphaeales from the Eocene of Antarctica Plant Systematics and Evolution 303 7 969 980 doi 10 1007 s00606 017 1422 y ISSN 2199 6881 S2CID 254058613 Antarctodon at Fossilworks org Trigonostylops at Fossilworks org Chornogubsky L 2009 A Reassessment of Antarctic Polydolopid Marsupials Middle Eocene La Meseta Formation Antarctic Science Goin F J Zimicz N Reguero M A Santillana S N Marenssi S A Moly J J October 2007 New marsupial Mammalia from the Eocene of Antarctica and the origins and affinities of the Microbiotheria Revista de la Asociacion Geologica Argentina 62 4 597 603 ISSN 1851 8249 Retrieved 2017 02 12 Tambussi Claudia amp Acosta Hospitaleche Carolina amp Reguero Marcelo amp Marenssi Sergio 2006 Late Eocene penguins from West Antarctica Systematics and biostratigraphy Geological Society London Special Publications 258 145 161 10 1144 GSL SP 2006 258 01 11 a b Hospitaleche C A amp Reguero M 2011 Taxonomic status of the Eocene penguinsOrthopteryx gigasWiman 1905 andIchtyopteryx gracilisWiman 1905 from Antarctica Alcheringa An Australasian Journal of Palaeontology 35 3 463 466 https doi org 10 1080 03115518 2011 527476 Uchman Alfred Andrzej GAZDZICKI 2006 New trace fossils from the La Meseta Formation Eocene of Seymour Island Antarctica Pol Polar Res 27 153 170 Long Douglas 1992 Sharks from the La Meseta Formation Eocene Seymour Island Antarctic Peninsula Journal of Vertebrate Paleontology 12 11 32 10 1080 02724634 1992 10011428 a b c d e f g h Goin Francisco J New Discoveries of Opposum Like Marsupials from Antarctica Seymour Island Medial Eocene OCLC 1196811246 a b c d e f g h Antarctic Paleontological Heritage Late Cretaceous Paleogene vertebrates from Seymour Marambio Island Antarctic Peninsula Advances in Polar Science 30 20 August 2019 doi 10 13679 j advps 2019 0015 Francisco J Goin Emma C Vieytes Javier N Gelfo Laura Chornogubsky Ana N Zimicz Marcelo A Reguero 2020 New metatherian mammal from the early Eocene of Antarctica Journal of Mammalian Evolution 27 1 17 36 doi 10 1007 s10914 018 9449 6 S2CID 91932037 a b c Gelfo Javier N Goin Francisco J Bauza Nicolas Reguero Marcelo 30 September 2019 The fossil record of Antarctic land mammals Commented review and hypotheses for future research Advances in Polar Science 274 292 doi 10 13679 j advps 2019 0021 Cenizo Marcos Noriega Jorge I Reguero Marcelo A 2016 01 12 A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons Journal of Ornithology 157 3 885 894 doi 10 1007 s10336 015 1316 0 hdl 11336 54190 ISSN 2193 7192 Acosta Hospitaleche Carolina Jones Washington 2024 Were terror birds the apex continental predators of Antarctica New findings in the early Eocene of Seymour Island Palaeontologia Electronica doi 10 26879 1340 Mors Thomas Reguero Marcelo Vasilyan Davit 2020 04 23 First fossil frog from Antarctica implications for Eocene high latitude climate conditions and Gondwanan cosmopolitanism of Australobatrachia Scientific Reports 10 1 5051 Bibcode 2020NatSR 10 5051M doi 10 1038 s41598 020 61973 5 ISSN 2045 2322 PMC 7181706 PMID 32327670 Engelbrecht Mors Reguero Kriwet Andrea Thomas Marcelo A Jurgen May 2017 A new saw shark Pristiophorus laevis from the Eocene of Antarctica with comments on Pristiophorus lanceolatus Historical Biology 29 6 841 853 doi 10 1080 08912963 2016 1252761 PMC 5447807 PMID 28579693 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link Bienkowska Wasiluk M Bonde N Moller P R Gazdzicki A 2013 Eocene relatives of cod icefishes Perciformes Notothenioidei from Seymour Island Antarctica Geological Quarterly 57 4 ISSN 1641 7291 Further reading editR A Askin 1997 Eocene Earliest Oligocene terrestrial palynology of Seymour Island Antarctica 993 996 The Antarctic Region Geological Evolution and Processes 993 996 M A Bitner 1991 A supposedly new brachiopod from the Paleogene of Seymour Island West Antarctica Polish Polar Research 12 2 243 246 D B Blake and R B Aronson 1998 Eocene stelleroids Echinodermata at Seymour Island Antarctic Peninsula Journal of Paleontology 72 2 339 353 M Bond M A Reguero S F Vizcaino and S A Marenssi 2006 A new South American ungulate Mammalia Litopterna from the Eocene of the Antarctic Peninsula Geological Society London Special Publications 258 163 176 J A Case 1988 Paleogene floras from Seymour Island Antarctic Peninsula Geology and Paleontology of Seymour Island Antarctic Peninsula 523 540 M M Cenizo 2012 Review of the putative Phorusrhacidae from the Cretaceous and Paleogene of Antarctica new records of ratites and pelagornithid birds Polish Polar Research 33 3 225 244 A L Cione M de las Mercedes Azpelicueta and D R Bellwood 1995 An oplegnathid fish from the Eocene of Antarctica Palaeontology 37 4 931 940 A L Cione and M A Reguero 1994 New records of the sharks Isurus and Hexanchus from the Eocene of Seymour Island Antarctica Proceedings of the Geologists Association 105 1 14 J Kriwet 2005 Additions to the Eocene Selachian Fauna of Antarctica with Comments on Antarctic Selachian Diversity Journal of Vertebrate Paleontology 25 1 1 7 S A Marenssi M A Regeuro S N Santillana and S F Vizcaino 1994 Eocene land mammals from Seymour Island Antarctica palaeobiogeographical implications 6 1 3 15 I Poole A M W Mennega and D J Cantrill 2003 Valdivian ecosystems in the Late Cretaceous and Early Tertiary of Antarctica further evidence from myrtaceous and eucryphiaceous fossil wood Review of Palaeobotany and Palynology 124 9 27 R R Pujana S N Santillana and S A Marenssi 2014 Conifer fossil woods from the La Meseta Formation Eocene of Western Antarctica Evidence of Podocarpaceae dominated forests Review of Palaeobotany and Palynology 200 122 137 S F Vizcaino M A Reguero S A Marenssi and S N Santillana 1997 New land mammal bearing localities from the Eocene La Meseta Formation Seymour Island Antarctica The Antarctic Region Geological Evolution and Processes 997 1000 Retrieved from https en wikipedia org w index php title La Meseta Formation amp oldid 1221329038, wikipedia, wiki, book, books, library,
