Sharks, rays, and skates had joints that looked ... one of many extinct lineages of armored fish that dominated aquatic ecosystems in the Devonian period (359-419 million years ago).
Surprisingly, these produced a rich collection of Devonian fish microfossils ... including modern sharks. Alternatively, it could be an early evolutionary stage for the spongy tissue (endochondral ...
Surprisingly, these produced a rich collection of Devonian fish microfossils ... including modern sharks. Alternatively, it could be an early evolutionary stage for the spongy tissue (endochondral ...
Described as a cross between a Komodo dragon, a great white shark, a killer whale and a T-rex ... important information about how planets like ours are formed. During the Devonian period over 300 ...
discusses the shark fossil record and family tree going back to the Devonian Period, and looks at the distinguishing features of these cartilaginous fish, including their way of life, adaptations, ...
The sheer size and predatory nature of this colossal shark would instill fear in the hearts of anyone ... was an armored predator of the Devonian seas. With a powerful, bony head and jaws capable of ...
The sheer size and predatory nature of this colossal shark would instill fear in the hearts of anyone ... was an armored predator of the Devonian seas. With a powerful, bony head and jaws capable of ...
Supernovas are powerful explosions marking the death of massive stars. They spread elements like carbon, calcium, and iron ...
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