Thelodontiformes
Comparison ofThelodus andLoganellia
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Agnatha
Class:	†Thelodonti
Order:	†Thelodontiformes Kiaer, 1932
Families
†Coelolepidae †Eestilepididae †Helenolepididae †Longodidae †Palaeodontidae †Phlebolepididae †Shieliidae †Talivaliidae †Turiniidae Genera without placement in any family: †Katoporodus – †Kawalepsis
Synonyms
†Coelolepidiformes Berg, 1937

Thelodontiformes is an extinct order of jawless fish of the Silurian.^[1]

Because the paucity of intact fossils, especially since some families are known entirely from scale fossils, taxonomy of thelodonts is based primarily on scale morphology. A recent assessment of thelodont taxonomy by Wilson and Märss in 2009 merges theorders Loganelliiformes, Katoporiida and Shieliiformes into Thelodontiformes, placesfamiliesLanarkiidae andNikoliviidae intoFurcacaudiformes (because of scale morphology) and establishesArchipelepidiformes as the basal-most order.^[2]

• Data related toThelodontiformes at Wikispecies

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