What kind of fish is Cephalaspis?
It was a trout-sized detritivorous fish that lived in the early Devonian….Cephalaspis.
|Cephalaspis Temporal range: Early Devonian (Lochkovian to Emsian),|
|Genus:||†Cephalaspis Agassiz, 1835|
How old are Cephalaspis?
Cephalaspis, extinct genus of very primitive, jawless, fishlike vertebrates found in Lower Devonian rocks (the Devonian Period lasted from 416 to 359.2 million years ago) in Europe and North America.
How big is Cephalaspis?
Physical Attributes. Being a primitive fish, Cephalaspis was small, about the size of a modern-day trout. Cephalaspis was a member of the Osteostraci, one of the most advanced sorts of Palaeozoic armored jawless fish.
When was Cephalaspis found?
about 400 million years ago
Cephalaspis (meaning ‘head shield’) is a genus of armoured fish in the early Devonian about 400 million years ago (mya). It was one of the jawless fishes, or ostracoderms, which were common at the time. They were discovered in the first half of the 19th century in the Old Red Sandstone of Britain.
What did Cephalaspis eat?
They were scavengers and bottom-feeder, unable to bite, instead feeding on worms, algae, and small shellfish on the sea-floor by sucking them into their jawless mouths utilizing water pressure; they would have also been prey for the large arthropods of her time, including the thunder-scorpion Brontoscorpio and sea ” …
Are Placoderms vertebrates?
Most of these aquatic vertebrates were placoderm fishes. Placoderms, with their characteristic armor of bony plates, were the most successful and diverse group of fishes during the Devonian. They also have an excellent fossil record because their dermal bones were generally robust and easily preserved.
What did Cephalaspis evolve into?
At the end, one Cephalaspis is seen evolving into a Hynerpeton.
What are some adaptations the Brontoscorpio had that made it much more adapted to coming onto land?
Brontoscorpio had evolved strong jaws for crushing and tearing apart the tough armored body of its prey. Not only could it breathe underwater with gills, but Brontoscorpio could also come onto dry land and absorb air it with its primitive book lungs, which were made up of hundreds of thin layers of tissue.
Do placoderms still exist?
placoderm, any member of an extinct group (Placodermi) of primitive jawed fishes known only from fossil remains. Placoderms existed throughout the Devonian Period (about 416 million to 359 million years ago), but only two species persisted into the succeeding Carboniferous Period.
How long ago did the dimetrodon live?
Dimetrodon, (genus Dimetrodon), extinct relative of primitive mammals that is characterized by a large, upright, sail-like structure on its back. Dimetrodon lived from about 286 million to 270 million years ago, during the Permian Period, and fossils of the animal have been found in North America.
What did the Brontoscorpio eat?
Brontoscorpio was a species of large, presumably aquatic scorpion, which lived sometime during the Late Silurian period. It is believed to have been a carnivore which probably fed on worms, fish and even other arthropods.