Scientists have traced the evolutionary origin of humans' outer ears to the gills of ancient fish through a series of ...

Killifish, or egg-laying toothcarps, are known for their ecological adaptability and species diversity. Two families of killifish exist in Europe today: the highly species-rich Aphaniidae and the ...

In the kits, the trilobite (2), brachiopod (3), dinosaur bone (4), horse tooth (5), petrified wood (6), graptolite (7), fish (8 ... that a permineralized fossil of the sponge. In the Kits: #4: ...