This section needs expansion. You can help by adding to it. (December 2016)
Albertaceratops is unusual in combining long brow horns with an otherwise centrosaurine skull, as centrosaurines normally possess short brow horns. Over its nose was a bony ridge, and on its frill were two large outwardly-projecting hooks.[1] Its size has been estimated at 5.8 metres (19 ft) and 3,500 kilograms (7,700 lb).[2]
Discovery and namingedit
Skull of the Albertaceratops nesmoi holotype, TMP 2001.26.1
Albertaceratops is known from a single complete skull (TMP.2001.26.1) found in August 2001 and skull and postcranial fragments. A phylogenetic analysis carried out by its describer, Michael J. Ryan, found it to be the most basal centrosaurine.[1] Additional specimens were reported from a bonebed in the Judith River Formation of Montana, which is equivalent to the Oldman Formation and differentiated only by the Canada–US border. However, further study showed these remains to come from a different centrosaurine, Medusaceratops. Both ceratopsids lived during the same time period, about 77.5 million years ago.[3]
The specific name, A. nesmoi, is derived from the name of Cecil Nesmo, a rancher living in Manyberries, Alberta, a town of less than 100 people located 71 km south of Medicine Hat. The rancher was thus honored in recognition of his efforts to aid fossil hunters.[1]
Classificationedit
Coronosaurus and Albertaceratops in environmentSize of Albertaceratops compared to a human
The cladogram presented below follows a phylogenetic analysis by Chiba et al. (2017), which included a systematic re-evaluation of Medusaceratops lokii:[4]
^ abcdRyan, Michael J. (2007). "A New Basal Centrosaurine Ceratopsid from the Oldman Formation, Southeastern Alberta". Journal of Paleontology. 81 (2): 376–396. doi:10.1666/0022-3360(2007)81[376:ANBCCF]2.0.CO;2. ISSN 0022-3360. S2CID 130607301.
^Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 259
^Ryan, Michael J.; Russell, Anthony P., and Hartman, Scott. (2010). "A New Chasmosaurine Ceratopsid from the Judith River Formation, Montana", In: Michael J. Ryan, Brenda J. Chinnery-Allgeier, and David A. Eberth (eds), New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium, Indiana University Press, 656 pp. ISBN0-253-35358-0.
^Kentaro Chiba; Michael J. Ryan; Federico Fanti; Mark A. Loewen; David C. Evans (2018). "New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana)". Journal of Paleontology. 92 (2): 272–288. doi:10.1017/jpa.2017.62. S2CID 134031275.
External linksedit
Wikispecies has information related to Albertaceratops.
, by Julius T. Csotonyi
An article about Cecil Nesmo[usurped] from the Calgary Sun
January 01, 1970
albertaceratops, meaning, alberta, horned, face, genus, centrosaurine, horned, dinosaur, from, middle, campanian, upper, cretaceous, oldman, formation, alberta, canada, temporal, range, late, cretaceous, preꞒ, skull, philip, currie, dinosaur, museum, scientifi. Albertaceratops meaning Alberta horned face was a genus of centrosaurine horned dinosaur from the middle Campanian age Upper Cretaceous Oldman Formation of Alberta Canada 1 AlbertaceratopsTemporal range Late Cretaceous 77 5 Ma PreꞒ Ꞓ O S D C P T J K Pg N Skull in Philip J Currie Dinosaur Museum Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Clade Dinosauria Clade Ornithischia Clade Ceratopsia Family Ceratopsidae Subfamily Centrosaurinae Genus AlbertaceratopsRyan 2007 Species A nesmoi Binomial name Albertaceratops nesmoiRyan 2007 Contents 1 Description 2 Discovery and naming 3 Classification 4 See also 5 References 6 External linksDescription edit nbsp Restoration This section needs expansion You can help by adding to it December 2016 Albertaceratops is unusual in combining long brow horns with an otherwise centrosaurine skull as centrosaurines normally possess short brow horns Over its nose was a bony ridge and on its frill were two large outwardly projecting hooks 1 Its size has been estimated at 5 8 metres 19 ft and 3 500 kilograms 7 700 lb 2 Discovery and naming edit nbsp Skull of the Albertaceratops nesmoi holotype TMP 2001 26 1 Albertaceratops is known from a single complete skull TMP 2001 26 1 found in August 2001 and skull and postcranial fragments A phylogenetic analysis carried out by its describer Michael J Ryan found it to be the most basal centrosaurine 1 Additional specimens were reported from a bonebed in the Judith River Formation of Montana which is equivalent to the Oldman Formation and differentiated only by the Canada US border However further study showed these remains to come from a different centrosaurine Medusaceratops Both ceratopsids lived during the same time period about 77 5 million years ago 3 The specific name A nesmoi is derived from the name of Cecil Nesmo a rancher living in Manyberries Alberta a town of less than 100 people located 71 km south of Medicine Hat The rancher was thus honored in recognition of his efforts to aid fossil hunters 1 Classification edit nbsp Coronosaurus and Albertaceratops in environment nbsp Size of Albertaceratops compared to a human The cladogram presented below follows a phylogenetic analysis by Chiba et al 2017 which included a systematic re evaluation of Medusaceratops lokii 4 Centrosaurinae Diabloceratops eatoni Machairoceratops cronusi Nasutoceratopsini Avaceratops lammersi ANSP 15800 MOR 692 CMN 8804 Nasutoceratops titusi Malta new taxon Xenoceratops foremostensis Sinoceratops zhuchengensis Wendiceratops pinhornensis Albertaceratops nesmoi Medusaceratops lokii Eucentrosaura Centrosaurini Rubeosaurus ovatus Styracosaurus albertensis Coronosaurus brinkmani Centrosaurus apertus Spinops sternbergorum Pachyrhinosaurini Einiosaurus procurvicornis Pachyrostra Achelousaurus horneri Pachyrhinosaurus canadensis Pachyrhinosaurus lakustai Pachyrhinosaurus perotorumSee also edit nbsp Dinosaurs portal Timeline of ceratopsian researchReferences edit a b c d Ryan Michael J 2007 A New Basal Centrosaurine Ceratopsid from the Oldman Formation Southeastern Alberta Journal of Paleontology 81 2 376 396 doi 10 1666 0022 3360 2007 81 376 ANBCCF 2 0 CO 2 ISSN 0022 3360 S2CID 130607301 Paul G S 2010 The Princeton Field Guide to Dinosaurs Princeton University Press p 259 Ryan Michael J Russell Anthony P and Hartman Scott 2010 A New Chasmosaurine Ceratopsid from the Judith River Formation Montana In Michael J Ryan Brenda J Chinnery Allgeier and David A Eberth eds New Perspectives on Horned Dinosaurs The Royal Tyrrell Museum Ceratopsian Symposium Indiana University Press 656 pp ISBN 0 253 35358 0 Kentaro Chiba Michael J Ryan Federico Fanti Mark A Loewen David C Evans 2018 New material and systematic re evaluation of Medusaceratops lokii Dinosauria Ceratopsidae from the Judith River Formation Campanian Montana Journal of Paleontology 92 2 272 288 doi 10 1017 jpa 2017 62 S2CID 134031275 External links edit nbsp Wikispecies has information related to Albertaceratops Drawing of the skull by Julius T Csotonyi An article about Cecil Nesmo usurped from the Calgary Sun Retrieved from https en wikipedia org w index php title Albertaceratops amp oldid 1226191670, wikipedia, wiki, book, books, library,
