placoderms造句

例句与造句

1. They were smaller than most placoderms, usually under 20 centimetres.
2. A significant proportion of Michigan's Devonian fish were placoderms.
3. The placoderm, then, was probably red above and silver below.
4. Unlike other flattened placoderms, the phyllolepids were inhabitants of freshwater environments.
5. The Xiaoxiang fauna also includes galeaspids, placoderms and acanthodians.
6. It's difficult to find placoderms in a sentence. 用placoderms造句挺难的
7. Placoderms, scaled or naked, depending on the species.
8. This allowed placoderms to lift their heads, unlike ostracoderms.
9. The remains of both antiarch and arthrodire placoderms are known from the formation.
10. The earliest known fish with jaws are the now extinct placoderms and spiny sharks.
11. The placoderm claspers are not cartilaginous fishes.
12. Much later, the exquisitely preserved placoderm fossils from Gogo reef changed the picture again.
13. Like other flattened placoderms, the phyllolepids were bottom-dwelling predators that ambushed prey.
14. The old placoderms did not have teeth at all, but had sharp bony plates in their mouth.
15. Newer research suggests that a branch of Placoderms was most likely the ancestor of present-day gnathostomes.
16. The first identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian.
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