Alligators have lived on Earth for millions of years and are sometimes described as ‘living fossils.’ An alligator is a crocodilian in the genus Alligator of the family Alligatoridae. The two extant ...

同时，短吻鳄超科由 Orientalosuchina 及其姐妹群短吻鳄科（Alligatoridae）组成，而 Globidonta 这一分类在此处与短吻鳄超科冗余。 系统发育体型估计 基于新的系统发育拓扑结构，研究人员发现短吻鳄超科早期代表体型相对较小。他们利用头骨宽度作为代理变量 ...

They often inhabit central and South America. They are related to alligators Caiman, also spelled cayman, any of several species of Central and South American reptiles that are related to alligators ...

For us humans, once our baby teeth fall out and our permanent teeth come in around six years of age, we’re stuck with that set for life. Damage, inconsistent hygiene practices, and unlucky teeth ...