- Palaeonisciformes
Taxobox
name = Palaeonisciformes
fossil_range=Late Silurian -Early Cretaceous
image_width = 240px
image_caption =
regnum =Animal ia
phylum = Chordata
classis =Actinopterygii
ordo = Palaeonisciformes
subdivision_ranks = Families
subdivision =Palaeonisciformes is an extinct order of primitive ray-finned fishes. They possesed additional supraorbitals and had a keystone-shaped
dermosphenotic ."
Andreolepis hedei " has proven so far to be the earliest-known Actinopterygiian, living around 420 million years ago (Late Silurian inRussia ,Sweden ,Estonia , andLatvia .The group diversified during the
Carboniferous .The Palaeonisciformes survived into the
Mesozoic , and became extinct during the earlyCretaceous .References
* [http://www.kirj.ee/public/va_ge/g50-3-3.pdf "Andreolepis" (Actinopterygii) in the Upper Silurian of Northern Eurasia]
* [http://palaeo.gly.bris.ac.uk/Palaeofiles/Fossilgroups/Actinopterygii/Basal%20acts/Palaeonisciformes Palaeonisciformes] atUniversity of Bristol
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