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Dunkleosteus. Dunkleosteus is an extinct genus of large arthrodire ("jointed-neck") fish that existed during the Late Devonian period, about 382–358 million years ago. It was a pelagic fish inhabiting open waters, and one of the first apex predators of any ecosystem. [ 1]
Dunkleosteus terrelli, a large fish found in Ohio Paleogeographic reconstruction showing the Appalachian Basin area during the Middle Devonian period. During the early Devonian only eastern Ohio was still covered by the sea. Ohio was located near the equator. Brachiopods and echinoderms still remained in the area during the Early Devonian. [3]
Well-represented in both freshwater and marine fossils since the Devonian, they are now represented by only two extant marine species in the genus Latimeria: the West Indian Ocean coelacanth (Latimeria chalumnae), primarily found near the Comoro Islands off the east coast of Africa, and the Indonesian coelacanth (Latimeria menadoensis). [4]
Prehistoric fish are early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Quaternary. The study of prehistoric fish is called paleoichthyology. A few living forms, such as the coelacanth are also referred to as prehistoric fish ...
Armored and jawless. Jawless fishes from the Ordovician Period — 488.3 million to 443.7 million years ago — are called ostracoderms, after their armored skin, and most of them are known from ...
The Western Interior Seaway(also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, and the Western Interior Sea) was a large inland seathat split the continent of North Americainto two landmasses for 34 million years. The ancient sea, which existed from the early Late Cretaceous(100 Ma) to the earliest Paleocene(66 ...
Gar. Gars are an ancient group of ray-finned fish in the family Lepisosteidae. They comprise seven living species of fish in two genera that inhabit fresh, brackish, and occasionally marine waters of eastern North America, Central America and Cuba in the Caribbean, [ 1][ 2] though extinct members of the family were more widespread. They are the ...
Researchers said they looked at ancient fish teeth from the carp family recovered from Gesher Benot Ya’aqov, a waterlogged area that once sat on the shore of the paleolithic lake Hula in the ...