Porolepiformes
Template:Short description Template:Automatic taxobox
Porolepiformes is an order of prehistoric lobe-finned fish which lived during the Devonian period (about 416 to 359 million years ago). They are thought to represent the sister group to lungfish (class Dipnoi).[1] The group contains two families: Holoptychiidae and Porolepididae.
Porolepiformes was established by the Swedish paleontologist Erik Jarvik, and were thought to have given rise to the salamanders and caecilians independently of the other tetrapods.[2] He based this conclusion on the shapes of the snouts of the aforementioned groups. This view is no longer in favour in Paleontology.[3]
Jarvik also claimed the existence of choanae in porolepiformes which linked them to tetrapods, but this has remained controversial.[4] Recent phylogenetic reconstruction places porolepiformes close to lungfishes.[5]
More recent evidence has shown that at least one genus Laccognathus was most likely amphibious.[6]
Phylogeny
Mikko's Phylogeny Archive:[7]
Script error: No such module "Clade".
References
<templatestyles src="Reflist/styles.css" />
- ↑ Script error: No such module "citation/CS1".
- ↑ Jarvik, Erik. 1980. Basic structure and evolution of vertebrates. Vol. 1–2. Academic Press (London).
- ↑ Script error: No such module "citation/CS1".
- ↑ Clement, G., 2001. Evidence for lack of choanae in the Porolepiformes. Journal of Vertebrate Paleontology, 21: 795–802.
- ↑ Janvier , P., Early vertebrates. Oxford science publications. 1996, Oxford, New York: Clarendon Press; Oxford University Press.
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
Script error: No such module "Check for unknown parameters".
Script error: No such module "Portal". Template:Sarcopterygian genera Template:Taxonbar