View source for Hibernaspidoidei

{{Short description|Extinct superfamily of jawless fishes}}
{{Taxobox
| fossil_range =  Early [[Devonian]]
| image = 
| image_caption = 
| regnum = [[Animal]]ia
| phylum = [[Chordata]]
| classis = [[Pteraspidomorphi]]
| subclassis = [[Heterostraci]]
| ordo = [[Cyathaspidiformes]]
| unranked_subordo = [[Amphiaspidida]]
| superfamilia = '''Hibernaspidoidei'''
| subdivision_ranks =  [[Family (Biology)|Families]]
| subdivision = 
*[[Hibernaspis|Hibernaspididae]]
*[[Eglonaspididae]]
*[[Aphataspididae]]
}}
[[File:Hibernaspis NT small.jpg|thumb|Life reconstruction of ''Hibernaspis macrolepis'']]

'''Hibernaspidoidei''' is a [[taxon]] of extinct [[Amphiaspidida|amphiaspidid]] [[heterostraci|heterostracan]] [[agnatha]]ns whose fossils are restricted to Lower Devonian marine strata of [[Siberia]] near the [[Taimyr Peninsula]].  In life, hibernaspid amphiaspidids are thought to be benthic animals that lived most of their lives mostly buried in the sediment of a series of [[hypersaline lake|hypersaline lagoons]]. All amphiaspids are easily distinguished from other heterostracans in that all of the plates of the cephalothorax armor are fused into a single, [[Muff (handwarmer)|muff-like]] unit, so that the forebody of the living animal would have looked like a potpie or a hot waterbottle with  a pair of small, or degenerated eyes, a pair of branchial openings for exhaling, and, in the case of hibernaspids, a simple, slit-like mouth at the anterior end of a tube-like head.

==Taxonomy==
Hibernaspidoidei contains three families.

=== Hibernaspididae ===
This family is [[monotypic taxon|monotypic]], containing only the genus ''[[Hibernaspis]]''.

=== Eglonaspididae ===
This is a diverse family that contains five monotypic genera, including ''[[Eglonaspis]]'', ''[[Gerronaspis]]'', ''[[Lecaniaspis]]'', ''[[Empedaspis]]'', and ''[[Pelurgaspis]]''.

=== Aphataspididae ===
This family contains two monotypic genera, ''[[Aphataspis]]'' and ''[[Putoranaspis]]''.

==References==
{{Reflist}}

{{Pteraspidomorphi}}
{{Taxonbar|from=Q20721370}}

[[Category:Amphiaspidida]]
[[Category:Devonian jawless fish]]
[[Category:Prehistoric animal superfamilies]]
[[Category:Vertebrate superfamilies]]
[[Category:Early Devonian fish]]
[[Category:Fauna of Siberia]]
[[Category:Fossils of Russia]]
[[Category:Early Devonian first appearances]]
[[Category:Devonian extinctions]]


{{Pteraspidomorphi-stub}}
{{Devonian-jawless-fish-stub}}