What is Tetrapodomorph?
{{Automatic Taxobox | name = Tetrapodomorphs | fossil_range = early [[Devonian]]-Recent | image =Tiktaalik BW.jpg | image_width = 200px | image_caption = The basal tetrapodomorph ''[[Tiktaalik]]'' | taxon = Tetrapodomorpha }} '''Tetrapodomorpha''' is a [[clade]] of [[vertebrate]]s. It is a [[subclass (biology)|subclass]] of the [[Sarcopterygii]] which includes [[tetrapod]]s (four-limbed vertebrates) and their closest relatives. Advanced [[transitional fossil]]s between fish and the early [[labyrinthodont]]s, like ''[[Tiktaalik]]'', are [[wikt:informal|informally]] called '[[fishapod]]s' by their discoverers. They are half-fish half-[[tetrapod]]s, in appearance and limb morphology. Tetrapodomorpha contains # the [[stem group]] tetrapoda, [[extinct]] [[fossil]] relatives of the crown group. This is a [[paraphyletic]] unit covering the fish to tetrapod transition. Tetrapodomorpha contains several groups of related [[lobe-finned fish]]es, collectively known as the [[osteolepiform]]s. # the [[crown group]] tetrapods, the last common ancestor of living tetrapods and all of its [[descendant]]s. Among the characters defining tetrapodomorphs are modifications to the fins, notably a [[humerus]] with convex head articulating with the glenoid fossa (the socket of the [[shoulder]] joint). Tetrapodomorph fossils are known from the early [[Devonian]] onwards, and include ''[[Eusthenopteron]]'', ''[[Osteolepis]]'', ''[[Panderichthys]]'', ''[[Tiktaalik]]'', ''[[Ventastega]]'' and ''[[Kenichthys]]''. The fossils of the early [[Mississippian]], ''[[Pederpes]]'' and ''[[Whatcheeria]]'' are regarded as early [[tetrapod]]s whose relationships are not yet clear. == Related pages == *[[Tetrapod]] [[Category:Lobe-finned fish]] [[Category:Tetrapods]]