Archipelepidiformes

Extinct order of jawless fishes

Archipelepidiformes Temporal range: Late Telychian-Sheinwoodian

Archipelepis turbinata
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Thelodonti
Order:	†Archipelepidiformes Wilson & Märss, 2009
Families
†Archipelepididae †Boothialepididae

Archipelepidiformes is an order of extinct jawless fishes in the class Thelodonti.

Archipelepidiforms are regarded as the basalmost thelodonts primarily because the histology and morphology of archipelepidiforms have many similarities with the histology and morphology of pteraspidomorphs, hinting that the two groups share a common ancestor, and hinting that archipelepidiforms retain many primitive features from this common ancestor.^[1] ^[2]

Currently, only whole body fossils of Archipelepis are known: these fossils show that archipelepids were tadpole-like animals with no fins aside from a forked caudal fin.^[3]

References

^ Soehn, K. L., Märss, T., Caldwell, M. W. & Wilson, M. V. H., 2001: New and biostratigraphically useful thelodonts from the Silurian of the Mackenzie Mountains, Northwest Territories, Canada. Journal of Vertebrate Paleontology, 21: 651-659 [1]
^ Wilson, Mark VH, and Tiiu Märss. "Thelodont phylogeny revisited, with inclusion of key scale-based taxa." Estonian Journal of Earth Sciences 58.4 (2009): 297œ310. [2]
^ Märss, Tiiu, VH Wilson, Mark, & Thorsteinsson, Raymond. "New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian and Lower Devonian of the Canadian Arctic Archipelago."Proceedings of the Estonian Academy of Sciences, Geology. Vol. 51. No. 2. Estonian Academy Publishers, 2002.

External links

Data related to Archipelepidiformes at Wikispecies

Thelodonti

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata

Thelodonti

Oeselia Skamolepis Sophialepis Thulolepis
Archipelepidiformes	Archipelepis Boothialepis

Furcacaudiformes

Barlowodus Drepanolepis Pezopallichthys
Nikoliviidae	Chattertonodus Nikolivia
Lanarkiidae	Lanarkia Phillipsilepis
Apalolepididae	Apalolepis Gampsolepis
Furcacaudidae	Canonia Cometicercus Furcacauda Sphenonectris

Thelodontiformes

Helenolepis Longodus
Talivaliidae	Amaltheolepis Glacialepis Talivalia
Turiniidae	Arianalepis Australolepis Boreania Jesslepis Neoturinia Turinia
Coelolepidae	Parathelodus Thelodus
Loganelliidae	Angaralepis Illoganellia Larolepis Loganellia Nunavutia Sandivia Stroinolepis Talimaalepis Valyalepis
Phlebolepididae	Erepsilepis Phlebolepis
Shieliidae	Eestilepis Goniporus Nethertonodus Niurolepis Overia Paralogania Praetrilogania Shielia Trimerolepis Valiukia Zuegelepis