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The Devonian Period is sometimes called the “Age of Fishes” because of the diverse, abundant, and, in some cases, bizarre types of these creatures that swam Devonian seas. Forests and the coiled shell-bearing marine organisms known as ammonites first appeared early in the Devonian.
Fishes, especially jawed fish, reached substantial diversity during this time, leading the Devonian to often be dubbed the Age of Fishes. The armored placoderms began dominating almost every known aquatic environment.
Category:Devonian fish. Appearance. Prehistoric fish of the Devonian period, during the Paleozoic Era. See also the preceding Category:Silurian fish and the succeeding Category:Carboniferous fish.
The Devonian period (419–359 Mya), also known as the Age of Fishes, saw the development of early sharks, armoured placoderms and various lobe-finned fish, including the tetrapod transitional species. The evolution of fish began about 530 million years ago during the Cambrian explosion.
The Devonian saw major evolutionary advancements by fishes with diversification and dominance in both marine and fresh water environments—the Devonian is also known as the “Age of Fishes.”
The Devonian, part of the Paleozoic era, is otherwise known as the Age of Fishes, as it spawned a remarkable variety of fish. The most formidable of them were the armored placoderms, a group...
Many groups of Devonian fishes were heavily armoured, and this has led to their good representation in the fossil record. Fish remains are widespread in the Old Red Sandstone rocks of Europe, especially in the Welsh borderland and Scottish areas of Britain; these are mostly associated with freshwater or estuarine deposits.
Tiktaalik roseae, an extinct fishlike aquatic animal that lived about 380–385 million years ago (during the earliest late Devonian Period) and was a very close relative of the direct ancestors of tetrapods (four-legged land vertebrates). The genus name, Tiktaalik, comes from the Inuktitut language.
A spectacularly preserved 380-million-year old fossil of the fish Gogonasus from the Devonian of Australia is fish-like in many respects, yet features of its ear and limbs are...
The marine group showing the most diversification during the Devonian was fish. Two prominent groups were agnathans (jawless fish) and placoderms (the first jawed fish).