Colobodontidae is an extinct family of marine

stem Stem or STEM may refer to: Plant structures * Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang * Stipe (botany), a stalk to support some other structure * Stipe (mycology), the stem of a mushro ...

neopterygian Neopterygii (from Greek νέος ''neos'' 'new' and πτέρυξ ''pteryx'' 'fin') is a subclass of ray-finned fish (Actinopterygii). Neopterygii includes the Holostei and the Teleostei, of which the latter comprise the vast majority of extant f ...

fish known from the Middle to

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch ...

of Asia and Europe. As currently defined, it contains three genera: '' Colobodus'', '' Crenilepis'' and '' Feroxichthys''. The colobodontids were medium-sized, somewhat deep-bodied fishes with a durophagous diet. Like many other stem-neopterygians, they have traditionally been placed in the order

Perleidiformes Perleidiformes are an extinct order of prehistoric ray-finned fish from the Triassic period Although numerous Triassic taxa have been referred to Perleidiformes, which ones should be included for it to form a monophyletic group is a matter of on ...

, which is now thought to be

paraphyletic In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...

Classification

The cladogram below follows Ma ''et al.'' (2021) and shows the relationships between Colobodontidae and other neopterygian clades:

References

Prehistoric neopterygii Prehistoric ray-finned fish families {{Triassic-fish-stub