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Eusthenopteron (from Greek: εὖ eû, 'good', Greek: σθένος sthénos, 'strength', and Greek: πτερόν pteron 'wing' or 'fin') [2] is a genus of prehistoric sarcopterygian (often called "lobe-finned") fish known from several species that lived during the Late Devonian period, about 385 million years ago.
Sarcopterygii (/ ˌ s ɑːr k ɒ p t ə ˈ r ɪ dʒ i. aɪ /; from Ancient Greek σάρξ (sárx) 'flesh' and πτέρυξ (ptérux) 'wing, fin') — sometimes considered synonymous with Crossopterygii (from Ancient Greek κροσσός (krossós) 'fringe') — is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe ...
The lobe-finned fishes are chordates of the clade Sarcopterygii. While traditionally excluded, the tetrapods (including all birds and land vertebrates ) are now included in Sarcopterygii according to cladistic taxonomy .
Coelacanths are a part of the clade Sarcopterygii, or the lobe-finned fishes. They share membership in this clade with lungfish and tetrapods. Externally, several characteristics distinguish coelacanths from other lobe-finned fish. They possess a three-lobed caudal fin, also called a trilobate fin or a diphycercal tail. A secondary tail ...
Lungfish are freshwater vertebrates belonging to the class Dipnoi. [1] Lungfish are best known for retaining ancestral characteristics within the Osteichthyes, including the ability to breathe air, and ancestral structures within Sarcopterygii, including the presence of lobed fins with a well-developed internal skeleton.
The largest living (non-tetrapod) lobe-finned fish is the coelacanth. The average weight of the living West Indian Ocean coelacanth, (Latimeria chalumnae), is 80 kg (180 lb), and they can reach up to 2 m (6.6 ft) in length. Specimens can weigh up to 110 kg (240 lb). The largest lobe-finned fish of all time was Rhizodus at up to 7 m (23 ft). [145]
Graulia is an extinct genus of lobe-finned fish from the Middle Triassic of eastern France.It contains a single species, G. branchiodonta, and is represented by some of the most well preserved fossils of any Mesozoic coelacanth.
Prehistoric lobe-finned fish stubs (166 P) Pages in category "Prehistoric lobe-finned fish" The following 2 pages are in this category, out of 2 total.