Biology:Hydrotherosaurus
| Hydrotherosaurus | |
|---|---|
| |
| Restoration | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Elasmosauridae |
| Genus: | †Hydrotherosaurus Welles, 1943 |
| Species: | †H. alexandrae
|
| Binomial name | |
| †Hydrotherosaurus alexandrae Welles, 1943
| |
Hydrotherosaurus (meaning "water beast lizard") is an extinct genus of elasmosaurid plesiosaur from the Upper Cretaceous (Maastrichtian stage) Moreno Formation of Fresno County, California , USA. The only known species, H. alexandrae, was named for its discoverer, Annie Montague Alexander, by Samuel Paul Welles.
Description
Hydrotherosaurus was a medium-sized plesiosaur, measuring approximately 7.8–8 metres (25.6–26.2 ft) long.[1][2] It has one of the longest necks relative to total length among elasmosaurids, with 60 vertebrae in total. It had a small head that measured about 33 centimetres (13 in; 1.08 ft) long, a streamlined body, and four large flippers that were specially designed to help the huge animal balance, move, and accelerate itself.[citation needed]
See also
References
- ↑ O'Gorman, J.P. (2016). "A Small Body Sized Non-Aristonectine Elasmosaurid (Sauropterygia, Plesiosauria) from the Late Cretaceous of Patagonia with Comments on the Relationships of the Patagonian and Antarctic Elasmosaurids". Ameghiniana 53 (3): 245–268. doi:10.5710/AMGH.29.11.2015.2928. http://sedici.unlp.edu.ar/handle/10915/108247.
- ↑ Valentin Fischer; Nikolay G. Zverkov; Maxim S. Arkhangelsky; Ilya M. Stenshin; Ivan V. Blagovetshensky; Gleb N. Uspensky (2020). "A new elasmosaurid plesiosaurian from the Early Cretaceous of Russia marks an early attempt at neck elongation". Zoological Journal of the Linnean Society 192 (4): 1167–1194. doi:10.1093/zoolinnean/zlaa103. https://orbi.uliege.be/handle/2268/251614.Supplementary Information
Sources
- Welles, S. P. (1943). "Elasmosaurid plesiosaurs with a description of the new material from California and Colorado". University of California Memoirs 13: 125–254.
Wikidata ☰ {{{from}}} entry
 |  |
