Anasazisaurus
Anasazisaurus | |
---|---|
Holotype skull | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | †Ornithischia |
Clade: | †Ornithopoda |
Family: | †Hadrosauridae |
Subfamily: | †Saurolophinae |
Tribe: | †Kritosaurini |
Genus: | †Anasazisaurus Hunt & Lucas, 1993 |
Type species | |
†Anasazisaurus horneri Hunt & Lucas, 1993
|
Anasazisaurus (
Discovery and naming
Horner originally assigned the skull to
Description
The anatomy of Anasazisaurus is poorly known. The skull is somewhat poorly preserved, lacks the lower jaw, beak, and quadrate, and was only recently fully prepared.[10] It has a sort of tab or flange of bone, from the nasals, that rises between and above the eyes and folds back under itself. This unique crest allows it to be distinguished from similar hadrosaurs, like Gryposaurus.[2] The top of the crest is roughened, and the maximum preserved length of the skull is ~90 centimeters (~35 in).[10] According to Gregory S. Paul, it was about 7.5 meters long and weigh up to 2500 kg.[11]
Classification
Anasazisaurus is a saurolophine hadrosaurid, meaning it lacked a hollow crest. The most recent review recognized it as distinct, but did not try to place it beyond
Paleobiology
As a hadrosaurid, Anasazisaurus would have been a large
Paleoenvironment
Anasazisaurus was discovered in the Farmington Member of the Kirtland Formation, which is one of the lower members. This formation dates from the late Campanian stages of the Late Cretaceous Period (73-74 million years ago),[4] and is also the source of several other dinosaurs, like Bistahieversor, Kritosaurus, Naashoibitosaurus, Parasaurolophus, Pentaceratops, Nodocephalosaurus, Saurornitholestes, and Ziapelta.[12]
See also
References
- ^ a b Hunt, Adrian P.; Lucas, Spencer G. (1993). "Cretaceous vertebrates of New Mexico". In Lucas, S.G.; Zidek, J. (eds.). Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin, 2. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. pp. 77–91.
- ^ a b Horner, John R. (1992). "Cranial morphology of Prosaurolophus (Ornithischia: Hadrosauridae) with descriptions of two new hadrosaurid species and an evaluation of hadrosaurid phylogenetic relationships". Museum of the Rockies Occasional Paper. 2: 1–119.
- ^ ISBN 0-520-24209-2.
- ^ a b Williamson, Thomas E. (2000). "Review of Hadrosauridae (Dinosauria, Ornithischia) from the San Juan Basin, New Mexico". In Lucas, S.G.; Heckert, A.B. (eds.). Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin, 17. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. pp. 191–213.
- ^ Prieto-Márquez, A. 2014. "Skeletal morphology of Kritosaurus navajovius (Dinosauria:Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini". Journal of Systematic Palaeontology 12(2): 133-175
- S2CID 249559319.
- .
- S2CID 86032549.
- PMID 33859873.
- ^ a b Lucas, Spencer G.; Spielman, Justin A.; Sullivan, Robert M.; Hunt, Adrian P.; Gates, Terry (2006). "Anasazisaurus, a hadrosaurian dinosaur from the Upper Cretaceous of New Mexico". In Lucas, S.G.; Sullivan, Robert M. (eds.). Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin, 35. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. pp. 293–297.
- ^ Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 306
- ^ Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Le Loeuff, Jean; Xu Xing; Zhao Xijin; Sahni, Ashok; Gomani, Elizabeth, M.P.; and Noto, Christopher R. (2004). "Dinosaur Distribution". The Dinosauria (2nd). 517–606.