''Pterognathia'' is a genus of
worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always).
Worms vary in size from microscopic to over in length for marine polychaete wor ...
s belonging to the family
Pterognathiidae
Pterognathiidae is a family of worms belonging to the order Filospermoidea
Filospermoidea is an order within the phylum Gnathostomulida. Filospermoids are generally longer than gnathostomulids in the order Bursovaginoidea, and have an elongate ...
.
The genus has almost
cosmopolitan distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext ...
.
Species
Species:
*''
Pterognathia alcicornis''
*''
Pterognathia atrox''
*''
Pterognathia crocodilus
''Pterognathia'' is a genus of worms belonging to the family Pterognathiidae.
The genus has almost cosmopolitan distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of t ...
''
References
{{Taxonbar, from=Q2340110
Gnathostomulida
Platyzoa genera