Post by dinosauria101 on Oct 21, 2019 20:10:31 GMT 5
North American Beavers (3-5) - Castor canadensis
This beaver is the largest rodent in North America and competes with its Eurasian counterpart, the European beaver, for being the second-largest in the world, both following the South American capybara. Adults usually weigh from 11 to 32 kg (24 to 71 lb), with 20 kg (44 lb) being typical. The head-and-body length is 74–90 cm (29–35 in), with the tail adding a further 20–35 cm (7.9–13.8 in). Very old individuals can exceptionally exceed normal sizes, weighing more than 40 kg (88 lb) or even as much as 50 kg (110 lb).
postmediawindsorstar2.files.wordpress.com/2015/05/beavers.jpg
Elasmosaurus platyurus
Elasmosaurus (/ɪˌlæzməˈsɔːrəs, -moʊ-/;[2]) is a genus of plesiosaur that lived in North America during the Campanian stage of the Late Cretaceous period, about 80.5 million years ago. The first specimen was discovered in 1867 near Fort Wallace, Kansas, and was sent to the American paleontologist Edward Drinker Cope, who named it E. platyurus in 1868. The generic name means "thin-plate reptile", and the specific name means "flat-tailed". Cope originally reconstructed the skeleton of Elasmosaurus with the skull at the end of the tail, an error which was made light of by the paleontologist Othniel Charles Marsh, and became part of their "Bone Wars" rivalry. Only one incomplete Elasmosaurus skeleton is definitely known, consisting of a fragmentary skull, the spine, and the pectoral and pelvic girdles, and a single species is recognized today; other species are now considered invalid or have been moved to other genera. In 1952 the American paleontologist Samuel Welles estimated the body length to have been 10.3 meters (34 ft).[6] In his 1869 description of Elasmosaurus, the American paleontologist Edward Drinker Cope estimated the length of the animal by summing up vertebral lengths and estimations of missing parts, resulting in a total length of 13.1 meters (520 in). The living animal would have been slightly larger due to cartilage present between the vertebral bodies, and was estimated by Cope at roughly 13.7 meters (45 ft). Like other elasmosaurids, Elasmosaurus would have had a slender, triangular skull. The snout was rounded and almost formed a semi-circle when viewed from above, and the premaxillae (which form the front of the upper jaw) bore a low keel at the midline. It is uncertain how many teeth Elasmosaurus had, due to the fragmentary state of the fossils.
images.dinosaurpictures.org/elasmosaurus-platyurus-a-prehistoric-sergey-krasovskiy_1ead.jpg
Credit to Wikipedia
Let's see if this matchup is any better than 1-on-1 with the giant beaver!
This beaver is the largest rodent in North America and competes with its Eurasian counterpart, the European beaver, for being the second-largest in the world, both following the South American capybara. Adults usually weigh from 11 to 32 kg (24 to 71 lb), with 20 kg (44 lb) being typical. The head-and-body length is 74–90 cm (29–35 in), with the tail adding a further 20–35 cm (7.9–13.8 in). Very old individuals can exceptionally exceed normal sizes, weighing more than 40 kg (88 lb) or even as much as 50 kg (110 lb).
postmediawindsorstar2.files.wordpress.com/2015/05/beavers.jpg
Elasmosaurus platyurus
Elasmosaurus (/ɪˌlæzməˈsɔːrəs, -moʊ-/;[2]) is a genus of plesiosaur that lived in North America during the Campanian stage of the Late Cretaceous period, about 80.5 million years ago. The first specimen was discovered in 1867 near Fort Wallace, Kansas, and was sent to the American paleontologist Edward Drinker Cope, who named it E. platyurus in 1868. The generic name means "thin-plate reptile", and the specific name means "flat-tailed". Cope originally reconstructed the skeleton of Elasmosaurus with the skull at the end of the tail, an error which was made light of by the paleontologist Othniel Charles Marsh, and became part of their "Bone Wars" rivalry. Only one incomplete Elasmosaurus skeleton is definitely known, consisting of a fragmentary skull, the spine, and the pectoral and pelvic girdles, and a single species is recognized today; other species are now considered invalid or have been moved to other genera. In 1952 the American paleontologist Samuel Welles estimated the body length to have been 10.3 meters (34 ft).[6] In his 1869 description of Elasmosaurus, the American paleontologist Edward Drinker Cope estimated the length of the animal by summing up vertebral lengths and estimations of missing parts, resulting in a total length of 13.1 meters (520 in). The living animal would have been slightly larger due to cartilage present between the vertebral bodies, and was estimated by Cope at roughly 13.7 meters (45 ft). Like other elasmosaurids, Elasmosaurus would have had a slender, triangular skull. The snout was rounded and almost formed a semi-circle when viewed from above, and the premaxillae (which form the front of the upper jaw) bore a low keel at the midline. It is uncertain how many teeth Elasmosaurus had, due to the fragmentary state of the fossils.
images.dinosaurpictures.org/elasmosaurus-platyurus-a-prehistoric-sergey-krasovskiy_1ead.jpg
Credit to Wikipedia
Let's see if this matchup is any better than 1-on-1 with the giant beaver!