Polydactyly in stem-tetrapods should here be understood as having more than five digits to the finger or foot, a condition that was the natural state...

be stem tetrapods. Stem tetrapods are members of Tetrapodomorpha, the total group and clade that also includes their descendants, the crown tetrapods: The...

"smooth") + ἀμφίβια (amphíbia), meaning "smooth amphibians") is a group of tetrapods that includes all modern amphibians. Lissamphibians consist of three living...

"roof", is an extinct genus of stem-tetrapod, among the first vertebrate animals to have recognizable limbs. It appeared in the late Devonian period (Famennian...

evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe-finned fishes. Tetrapods (under...

of early stem tetrapods. Baphetids were among the first of the Carboniferous fossil tetrapods to be found and were originally described in 1850 by John...

challenged by Stephen Jay Gould in his 1991 essay "Eight (or Fewer) Little Piggies," where he pointed out polydactyly in early tetrapods and described the specializations...

exclusive of other tetrapods. Instead, they consistute an evolutionary grade (a paraphyletic group), ancestral to living tetrapods such as lissamphibians...

tetrapods considered more closely related to amniotes are put in the superorder Reptiliomorpha. The phylogenetic relationships of Paleozoic tetrapods...

including tetrapods. It also had labyrinthodont teeth, characterized by infolded enamel, which characterizes all of the earliest known tetrapods as well...

in swamps. Although Ichthyostega is often labelled a 'tetrapod' because of its limbs and fingers, it evolved long before true crown group tetrapods and...

and other lobe-finned fishes, and even tetrapods, because all tetrapods at this time still had to lay their eggs in water. Johanson, Z.; Jeffery, J.; Challands...

(stem-group tetrapods) that lived in the Carboniferous period. They possessed a variety of characteristics from different tetrapod or stem-tetrapod groups...

Ahlberg, P. E.; Johanson, Z. (1998). "Osteolepiforms and the ancestry of tetrapods" (PDF). Nature. 395 (6704): 792–794. Bibcode:1998Natur.395..792A. doi:10...

tetrapods, Panderichthys exhibits a range of features transitional between tristichopterid lobe-fin fishes (e.g., Eusthenopteron) and early tetrapods...

of the Devonian tetrapod Tulerpeton curtum Lebedev Stegocephalians: Tetrapods and other digit-bearing vertebrates Famennian Tetrapods Worldwide Tulerpeton...

closest relative of tetrapods known to have retained paired fins rather than feet). Under this use, the number of known Devonian tetrapods have increased dramatically...

prehistoric lobe-finned fishes, it was cladistically redefined to include tetrapods. A rise in global oxygen content allowed for the evolution of large, predatory...

consisting of tetrapods (four-limbed vertebrates) and their closest sarcopterygian relatives that are more closely related to living tetrapods than to living...

relative to tetrapods: Their phylogenetic position remains unchanged and the footprints found in the Holy Cross Mountains are attributed to tetrapods but as...

forming anchoring points for the ribs. This form of complex backbone was found in some crossopterygian fish, the Ichthyostegalia, most Temnospondyli and some...

neontological definition of tetrapods (i.e., only in the context of modern life), alternative terms for non-crown tetrapods include "stem-tetrapod" or "stegocephalian"...

suggested that adelospondyls are stem-tetrapods close to colosteids and a 2017 paper on Lethiscus has Aïstopoda in the tetrapod stem based on their primitive...

digit-bearing stem-tetrapods (early amphibians, in the broad sense). It was a close relative to the colosteids, a family of aquatic stem-tetrapods with long...

crown-group and stem-group tetrapods. Laurin's Stegocephali is roughly defined as including all vertebrates closer to modern tetrapods than to Panderichthys...

closer to tetrapods. Elpistostegalian fish have few unique traits which are not retained from earlier fish or inherited by later tetrapods. In response...

Embolomeri is an order of tetrapods or stem-tetrapods, possibly members of Reptiliomorpha. Embolomeres first evolved in the Early Carboniferous (Mississippian)...

that the neurocranium of Palaeospondylus was similar to those of the stem-tetrapods Eusthenopteron and Panderichthys, and concluded that Palaeospondylus...

"reptiliomorphs", is also occasionally used to refer to stem-amniotes, i.e. a grade of reptile-like tetrapods that are more closely related to amniotes than they...

finned tetrapodomorphs (the group of sarcopterygians that contains modern tetrapods and their extinct relatives). It belonged to Rhizodontida, one of the...