Fossil of plants, invertebrates, vertebrates, and trace fossils have been identified in Yellowstone National Park from more than 40 stratigraphic units spanning more than 540 million years from the Cambrian to the Cenozoic eras.
Source: tatoeba (6920700)
Vertebrates typically have teeth.
Source: tatoeba (8846418)
A paleontologist in Texas has identified a new species of coelacanth, an ancient fish most closely related to land-dwelling vertebrates, including humans.
Source: tatoeba (11505341)
It may be primitive and not too pleasant, but fish like croakers and toadfish hum, grunt, and growl for the same reasons as other vertebrates: to attract mates and to threaten territorial invaders.
Source: tatoeba (11701189)
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