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Dakhla Formation

The Dakhla Formation is a Maastrichtian-Danian geologic formation in Egypt.[4] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[5]

Dakhla Formation
Stratigraphic range: Maastrichtian
TypeGeological formation
Sub-units
  • Ammonite Hill Member[1]
  • Baris Oyster Mudstone Member[2]
  • Beida Shale Member[3]
  • Kharga Shale Member[2]
UnderliesTarawan Formation[4]
OverliesDuwi Formation[4]
Thickness230 meters[4]
Lithology
PrimaryShale[4]
OtherMarl, Phosphorite
Location
Country Egypt

Fossil content 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.

Reptiles edit

Dinosaurs edit

Dinosaurs reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Sauropoda Ammonite Hill Member.[6] A left femur (Vb-646).[6] Most similar to femurs of Brachiosaurus or Saltasaurus.[6]

Mosasaurs edit

Mosasaurs reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Globidens G. phosphaticus Beris Oyster Mudstone Member.[2] A single tooth crown (CUNV0011).[2] A mosasaurine.
 
Mosasaurinae Indeterminate Beris Oyster Mudstone Member.[2] A fragmentary small dentary with a single tooth (CUNV0012).[2] A mosasaurine.

Testudines edit

Testudines reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Arenila A. krebsi Ammonite Hill Member.[7] Partial skull.[7] A bothremydid turtle.
?Cf. A. krebsi Ammonite Hill Member.[7] Partial dorsal shell & right pelvis.[7] A bothremydid turtle.
Bothremydidae Undetermined large forms Ammonite Hill Member.[7] Nuchal bone, left pleuron & partial plastron of one individual.[7] A large bothremydid turtle, with a shell length of 70 to 80 centimeters.[7]
Panchelonioidea Gen. et. sp. indet. Ammonite Hill Member.[8] Humerus (NVP010).[8] A giant marine turtle.
Taphrosphys T. cf. sulcatus Ammonite Hill Member.[7] Anterior part of dorsal shell & partial dorsal shell with partial anterior plastral lobe.[7] A bothremydid turtle.
Cf. T. sp. Ammonite Hill Member.[7] Left first pleural.[7] A bothremydid turtle.
?Aff. Tasbacka ?Aff. T. sp. Ammonite Hill Member.[7] Left humerus.[7] A chelonioid sea turtle.
 
Zolhafah Z. bella Ammonite Hill Member.[7] Skull.[7] A bothremydid turtle.

Fish edit

Fish reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Anomoeodus A. aegypticus Lower Beris Member.[9] A single specimen (NVP023).[9] A pycnodont.
Diastemapycnodus D. tavernensis Beris Member.[10] "A single vomer with partial dentition".[10] A pycnodont.

Invertebrates edit

Bivalves edit

Bivalves reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Apectoichnus A. longissimus Ammonite Hill Member.[1] Borings in Nypa fruits.[1] Bivalve borings.
Teredolites T. clavatus Ammonite Hill Member.[1] 32 moderately preserved borings (TBT02-33) & two badly preserved specimens (TBT44-45) in Nypa fruits.[1] Bivalve borings.

Plants edit

Plants reported from the Dakhla Formation
Genus Species Presence Material Notes Images
Nypa N. burtinii Fruits & seed casts.[11] A mangrove palm
N. sp. Ammonite Hill Member.[1] Fruits with bivalve borings.[1] A mangrove palm.

See also edit

References edit

  1. ^ a b c d e f g El Hedeny, M.; Kassab, W.; Rashwan, M.; Abu El-Kheir, G.; AbdelGawad, M. (2020-07-01). "Bivalve borings in Maastrichtian fossilNypafruits: Dakhla Formation, Bir Abu Minqar, South Western Desert, Egypt". Ichnos. 28 (1): 24–33. doi:10.1080/10420940.2020.1784158. ISSN 1042-0940. S2CID 225527064.
  2. ^ a b c d e f AbdelGawad, Mohamed K.; Abu El-Kheir, Gebely A.; Kassab, Walid G. (September 2021). "The youngest records of mosasaurid reptiles from the Upper Cretaceous of the South-Western Desert in Egypt". Proceedings of the Geologists' Association. 132 (5): 556–562. Bibcode:2021PrGA..132..556A. doi:10.1016/j.pgeola.2021.07.004. ISSN 0016-7878.
  3. ^ "UPPER DAKHLA FORMATION ( BEIDA SHALE MEMBER) AT G. DUWI, RED SEA, EGYPT: MINERALOGICAL AND GEOCHEMICAL ASPECTS | Faculty of Science". www.aun.edu.eg. Retrieved 2022-11-23.
  4. ^ a b c d e Anan, Tarek I.; Abd El-Wahed, Ahmed G. (2017-12-15). "The Maastrichtian-Danian Dakhla Formation, Eastern Desert, Egypt: Utilization in manufacturing lightweight aggregates". Applied Clay Science. 150: 10–15. Bibcode:2017ApCS..150...10A. doi:10.1016/j.clay.2017.08.027. ISSN 0169-1317.
  5. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517–607.
  6. ^ a b c Rauhut, Oliver W M; Werner, Christa (January 1997). "First record of a Maastrichtian sauropod dinosaur from Egypt". Palaeontolgia Africana. 34: 63–67.
  7. ^ a b c d e f g h i j k l m n o de Lapparent, France; Werner, Christa (April 1998). "New Late Cretaceous turtles from the Western Desert, Egypt". Annales de Paléontologie. 84 (2): 131–214. Bibcode:1998AnPal..84..131D. doi:10.1016/S0753-3969(98)80005-0.
  8. ^ a b Abu El-Kheir, G. A.-M.; AbdelGawad, M. K.; Kassab, W. G. (2021). "First known gigantic sea turtle from the Maastrichtian deposits in Egypt". Acta Palaeontologica Polonica. 66 (2): 349–355.
  9. ^ a b Capasso, Luigi; Abu El-kheir, Gebely Abdelmaksoud; Mousa, Mohamed Kamel; Tantawy, Abdel Aziz (December 2021). "ANOMOEODUS AEGYPTICUS N. SP. (PISCES, †PYCNODONTIFORMES) FROM THE LATE CRETACEOUS OF THE DAKHLA FORMATION, WESTERN DESERT, EGYPT". Thalassia Salentina (43): 89–104.
  10. ^ a b Abu El-Kheir; Tantawy; Mousa; Wahba; Capasso (2022-12-02). "Diastemapycnodus tavernensis gen. et sp. nov. (Actinopterygii, †Pycnodontiformes) from the marine Maastrichtian (Late Cretaceous) of the Dakhla Formation, Western Desert, Egypt". Historical Biology: A Journal of Paleobiology. 34 (12): 2324–2331. doi:10.1080/08912963.2021.2014482. S2CID 245051336.
  11. ^ El-Soughier, Maher I.; Mehrotra, R.C.; Zhou, Zhi-Yan; Shi, Gong-Le (January 2011). "Nypa fruits and seeds from the Maastrichtian–Danian sediments of Bir Abu Minqar, South Western Desert, Egypt". Palaeoworld. 20 (1): 75–83. doi:10.1016/j.palwor.2010.09.016. ISSN 1871-174X.

Bibliography edit

  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.


dakhla, formation, this, article, relies, largely, entirely, single, source, relevant, discussion, found, talk, page, please, help, improve, this, article, introducing, citations, additional, sources, find, sources, news, newspapers, books, scholar, jstor, dec. This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Dakhla Formation news newspapers books scholar JSTOR December 2009 The Dakhla Formation is a Maastrichtian Danian geologic formation in Egypt 4 Dinosaur remains are among the fossils that have been recovered from the formation although none have yet been referred to a specific genus 5 Dakhla FormationStratigraphic range Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg NTypeGeological formationSub unitsAmmonite Hill Member 1 Baris Oyster Mudstone Member 2 Beida Shale Member 3 Kharga Shale Member 2 UnderliesTarawan Formation 4 OverliesDuwi Formation 4 Thickness230 meters 4 LithologyPrimaryShale 4 OtherMarl PhosphoriteLocationCountry Egypt Contents 1 Fossil content 1 1 Reptiles 1 1 1 Dinosaurs 1 1 2 Mosasaurs 1 1 3 Testudines 1 2 Fish 1 3 Invertebrates 1 3 1 Bivalves 1 4 Plants 2 See also 3 References 3 1 BibliographyFossil content editColor 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 Reptiles edit Dinosaurs edit Dinosaurs reported from the Dakhla Formation Genus Species Presence Material Notes Images Sauropoda Ammonite Hill Member 6 A left femur Vb 646 6 Most similar to femurs of Brachiosaurus or Saltasaurus 6 Mosasaurs edit Mosasaurs reported from the Dakhla Formation Genus Species Presence Material Notes Images Globidens G phosphaticus Beris Oyster Mudstone Member 2 A single tooth crown CUNV0011 2 A mosasaurine nbsp Mosasaurinae Indeterminate Beris Oyster Mudstone Member 2 A fragmentary small dentary with a single tooth CUNV0012 2 A mosasaurine Testudines edit Testudines reported from the Dakhla Formation Genus Species Presence Material Notes Images Arenila A krebsi Ammonite Hill Member 7 Partial skull 7 A bothremydid turtle Cf A krebsi Ammonite Hill Member 7 Partial dorsal shell amp right pelvis 7 A bothremydid turtle Bothremydidae Undetermined large forms Ammonite Hill Member 7 Nuchal bone left pleuron amp partial plastron of one individual 7 A large bothremydid turtle with a shell length of 70 to 80 centimeters 7 Panchelonioidea Gen et sp indet Ammonite Hill Member 8 Humerus NVP010 8 A giant marine turtle Taphrosphys T cf sulcatus Ammonite Hill Member 7 Anterior part of dorsal shell amp partial dorsal shell with partial anterior plastral lobe 7 A bothremydid turtle Cf T sp Ammonite Hill Member 7 Left first pleural 7 A bothremydid turtle Aff Tasbacka Aff T sp Ammonite Hill Member 7 Left humerus 7 A chelonioid sea turtle nbsp Zolhafah Z bella Ammonite Hill Member 7 Skull 7 A bothremydid turtle Fish edit Fish reported from the Dakhla Formation Genus Species Presence Material Notes Images Anomoeodus A aegypticus Lower Beris Member 9 A single specimen NVP023 9 A pycnodont Diastemapycnodus D tavernensis Beris Member 10 A single vomer with partial dentition 10 A pycnodont Invertebrates edit Bivalves edit Bivalves reported from the Dakhla Formation Genus Species Presence Material Notes Images Apectoichnus A longissimus Ammonite Hill Member 1 Borings in Nypa fruits 1 Bivalve borings Teredolites T clavatus Ammonite Hill Member 1 32 moderately preserved borings TBT02 33 amp two badly preserved specimens TBT44 45 in Nypa fruits 1 Bivalve borings Plants edit Plants reported from the Dakhla Formation Genus Species Presence Material Notes Images Nypa N burtinii Fruits amp seed casts 11 A mangrove palm N sp Ammonite Hill Member 1 Fruits with bivalve borings 1 A mangrove palm See also edit nbsp Geology portal nbsp Paleontology portal nbsp Dinosaurs portal List of dinosaur bearing rock formations List of stratigraphic units with indeterminate dinosaur fossilsReferences edit a b c d e f g El Hedeny M Kassab W Rashwan M Abu El Kheir G AbdelGawad M 2020 07 01 Bivalve borings in Maastrichtian fossilNypafruits Dakhla Formation Bir Abu Minqar South Western Desert Egypt Ichnos 28 1 24 33 doi 10 1080 10420940 2020 1784158 ISSN 1042 0940 S2CID 225527064 a b c d e f AbdelGawad Mohamed K Abu El Kheir Gebely A Kassab Walid G September 2021 The youngest records of mosasaurid reptiles from the Upper Cretaceous of the South Western Desert in Egypt Proceedings of the Geologists Association 132 5 556 562 Bibcode 2021PrGA 132 556A doi 10 1016 j pgeola 2021 07 004 ISSN 0016 7878 UPPER DAKHLA FORMATION BEIDA SHALE MEMBER AT G DUWI RED SEA EGYPT MINERALOGICAL AND GEOCHEMICAL ASPECTS Faculty of Science www aun edu eg Retrieved 2022 11 23 a b c d e Anan Tarek I Abd El Wahed Ahmed G 2017 12 15 The Maastrichtian Danian Dakhla Formation Eastern Desert Egypt Utilization in manufacturing lightweight aggregates Applied Clay Science 150 10 15 Bibcode 2017ApCS 150 10A doi 10 1016 j clay 2017 08 027 ISSN 0169 1317 Weishampel et al 2004 Dinosaur distribution Pp 517 607 a b c Rauhut Oliver W M Werner Christa January 1997 First record of a Maastrichtian sauropod dinosaur from Egypt Palaeontolgia Africana 34 63 67 a b c d e f g h i j k l m n o de Lapparent France Werner Christa April 1998 New Late Cretaceous turtles from the Western Desert Egypt Annales de Paleontologie 84 2 131 214 Bibcode 1998AnPal 84 131D doi 10 1016 S0753 3969 98 80005 0 a b Abu El Kheir G A M AbdelGawad M K Kassab W G 2021 First known gigantic sea turtle from the Maastrichtian deposits in Egypt Acta Palaeontologica Polonica 66 2 349 355 a b Capasso Luigi Abu El kheir Gebely Abdelmaksoud Mousa Mohamed Kamel Tantawy Abdel Aziz December 2021 ANOMOEODUS AEGYPTICUS N SP PISCES PYCNODONTIFORMES FROM THE LATE CRETACEOUS OF THE DAKHLA FORMATION WESTERN DESERT EGYPT Thalassia Salentina 43 89 104 a b Abu El Kheir Tantawy Mousa Wahba Capasso 2022 12 02 Diastemapycnodus tavernensis gen et sp nov Actinopterygii Pycnodontiformes from the marine Maastrichtian Late Cretaceous of the Dakhla Formation Western Desert Egypt Historical Biology A Journal of Paleobiology 34 12 2324 2331 doi 10 1080 08912963 2021 2014482 S2CID 245051336 El Soughier Maher I Mehrotra R C Zhou Zhi Yan Shi Gong Le January 2011 Nypa fruits and seeds from the Maastrichtian Danian sediments of Bir Abu Minqar South Western Desert Egypt Palaeoworld 20 1 75 83 doi 10 1016 j palwor 2010 09 016 ISSN 1871 174X Bibliography edit Weishampel David B Dodson Peter and Osmolska Halszka eds The Dinosauria 2nd Berkeley University of California Press 861 pp ISBN 0 520 24209 2 nbsp This article about a specific stratigraphic formation in Africa is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Dakhla Formation amp oldid 1206175078, wikipedia, wiki, book, books, library,

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