zwierzęta: Common snapping turtle

Evidence: 100 • authority: 72

The common snapping turtle (Chelydra serpentina) is a species of large, freshwater turtles in the family Chelydridae. Its natural range extends from southeastern Canada, southwest to the edge of the Rocky Mountains, as far east as Nova Scotia, and Florida. The present-day C. serpentina population in the Middle Rio Grande suggests that the common snapping turtle has been present in this drainage since at least the 17th century and is likely native. The three species of Chelydra and the larger alligator snapping turtles (genus Macrochelys) are the only extant chelydrids, a family now restricted to the Americas. The common snapping turtle, as its name implies, is the most widespread. The commo…

Evidence: 81 • authority: 72

Evidence: 70 • authority: 72

Evidence: 64 • authority: 72

Evidence: 57 • authority: 72

Chelydridae is a family of turtles that has seven extinct and two extant genera. The extant genera are the snapping turtles, Chelydra and Macrochelys. Both are endemic to the Western Hemisphere. The extinct genera are Acherontemys, Chelydrops, Chelydropsis, Emarginachelys, Macrocephalochelys, Planiplastron, and Protochelydra.

Evidence: 51 • authority: 80

Evidence: 51 • authority: 80

Evidence: 51 • authority: 92

Variation and development of the turtle chondrocranium, with a description of the common musk turtle (Sternotherus odoratus, Kinosternidae, Cryptodira, Testudines).. Based on histological cross-sections, the chondrocranium of the common musk turtle (Sternotherus odoratus) was reconstructed, described, and compared with other turtles. It differs from that of other turtle chondrocrania by possessing elongated, slightly dorsally orientated nasal capsules with three dorsolateral foramina, which might be homologous to the foramen epiphaniale, and by having an enlarged crista parotica. Additionally, the posterior part of the palatoquadrate is more elongated and more slender than in other turtles,…

Evidence: 44 • authority: 80

Evidence: 44 • authority: 80

Evidence: 44 • authority: 92

A new pan-chelydrid turtle, <i>Tavachelydra stevensoni</i> gen. et sp. nov., from the lower Paleocene (early Danian, Puercan) Corral Bluffs Study Area in the Denver Basin, Colorado.. Isolated pan-chelydrid turtle shell fragments are common in Late Cretaceous and early Paleocene sediments across western North America, but more complete and associated specimens are rare, obfuscating our understanding of the group's early evolution. Here we describe a new genus and species, Tavachelydra stevensoni , of stem-chelydrid turtle from the early Paleocene of the Denver Formation (Danian, Puercan I and II) of Colorado based on complete shells, associated pelvic material, and referred crani…

Evidence: 38 • authority: 80