«Our embryological research helps us understand exactly how the gill structures in early vertebrates such as Metaspriggina relate to the gills of living forms,» says Gillis. (sciencedaily.com)
Tail use improves soft substrate performance in models of early vertebrate land locomotors. (nimbios.org)
If the denticles of some very early vertebrate had migrated into the jaw, grown larger and gained new functions, the speculation went, they could have given rise to modern choppers. (scientificamerican.com)