s, o, e, g, p, c, r, t, i, y are letters that make 'Crossopterygii'
ER, CRO, os, OS, te, sop, opt, Ross, Cross, Ro, Gi, SS, II, cross, ii, GI, so, SOP, Cr, Er, Os, Pt, Te are words within 'Crossopterygii'
1 possible definitions for 'Crossopterygii'
Under this definition, crossopterygii is a noun and has the following properties:
subclass Crossopterygii has the same meaning as Crossopterygii
'Crossopterygii' can be a type of class.
'Crossopterygii' can be a member of Osteichthyes, class Osteichthyes.
crossopterygian, lobefin, lobe-finned fish, Latimeridae, family Latimeridae are members of 'Crossopterygii'.