Seymouriamorpha
Seymouriamorpha were a small but widespread group of limbed vertebrates (tetrapods). They have long been considered reptiliomorphs, and most paleontologists may still accept this point of view, but some analyses suggest that seymouriamorphs are stem-tetrapods (not more closely related to Amniota than to Lissamphibia). Many seymouriamorphs were terrestrial or semi-aquatic. However, aquatic larvae bearing external gills and grooves from the lateral line system have been found, making them unquestionably amphibians. The adults were terrestrial. They ranged from lizard-sized creatures (30 centimeters) to crocodile-sized 150 centimeter long animals. They were reptile-like. If seymouriamorphs are reptiliomorphs, they were the distant relatives of amniotes. Seymouriamorphs form into three main groups, Kotlassiidae, Discosauriscidae, and Seymouriidae, a group that includes the best known genus, "Seymouria". The last seymouriamorph became extinct by the end of Permian.
Q19159
tetrapods
Concept
Q134683
reptiliomorphs
Concept
Q181537
Amniota
Concept
Q134861
Lissamphibia
Concept
Q129270
larva
Concept
Q132390
gill
Concept
Q280969
lateral line
Concept
Q15879
lizard
Concept
Q2535664
crocodile
Concept
Q729
animals
Concept
Q10811
reptile
Concept
Q181537
amniote
Concept
None
Kotlassiidae
UNK
Q2919368
Discosauriscidae
Concept
Q131455
Seymouriidae
Concept
Q34740
genus
Concept
Q131455
Seymouria
Concept
Q141118
extinct
Concept
Q76402
Permian
LOC
Q134777
Seymouriamorpha
Concept
+30^^http://www.w3.org/2001/XMLSchema#decimal
30
NUMBER
parent taxon
parent taxon
taxon rank
taxon rank