Scientists discovered that choanoflagellates coordinate their movements through electrical signaling via voltage-gated ...

This primitive animal has teeth on its tongue, secretes a viscid slime and can tie itself in a knot. It also has four hearts, the nature of which may clarify cardiac function in higher animals ...

5 x 14 x 11 in. (12.7 x 35.6 x 27.9 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

These strange animals are ... external ears reflect its adaptations to a semi-aquatic lifestyle, possibly primitive design that has survived through the ages. The tapir is an intriguing ...