s, a, o, d, e, p, m, r, t, i are letters that make 'Pteridospermopsida'
ER, perm, os, OS, id, DOS, DO, PS, pe, do, te, si, Ido, DoS, IDA, DA, Sida, psi, rid, RI, pteridosperm, SI, sperm, Perm, ID, MO, Ops, Er, Mo, Os, Pt, Si, Te, mo, mop are words within 'Pteridospermopsida'
1 possible definitions for 'Pteridospermopsida'
Under this definition, pteridospermopsida is a noun and has the following properties:
class Pteridospermopsida has the same meaning as Pteridospermopsida
'Pteridospermopsida' can be a type of class.
'Pteridospermopsida' can be a member of Gymnospermae, class Gymnospermae, Gymnospermophyta, division Gymnospermophyta.
Cycadofilicales, order Cycadofilicales, Lyginopteridales, order Lyginopteridales are members of 'Pteridospermopsida'.