Far; ily 3LSCTRIDAS 
The Sleeoers 
Palatine with branch extending - uo and articulating directly with 
lateral ethmoid apophysis behind origin of maxillary extension; mesoptery- 
'oid narrow, well develooed. Hyoercoracoid and hvuocoracoid well developed: 
•j 
radials inserted on hypercoraceid, hypocoracoid, and on ligamentous 
cartilaginous tissue between these bones. Vertebrae ?5 To 28 , of which 14 
to 17 caudal. 
A large group, with many genera and species. Many are found buried 
in the mud of estuaries. They are usually easily distinguished from the 
Gohidae by their separated ventral 
fins 
