Neospirifer (Pennsylvanian)
(from: http://newmedia.avs.uakron.edu/geology/ge/ch/sys/time.htm)
Ancient
Life--14--Spiriferid and Terebratulid Brachiopods at Kansas Geological
Survey
GEOL
3130 Phylum Brachiopoda at Geol 3130, Paleobiology Laboratory, University
of Houston
Neospirifer
at http://www.cadvantage.com/~leiszler/neospir.htm
Neospirifer
cameratus at http://www.finalmtn.com/ilfossil/neosp1.html
Neospirifer
cameratus 2 at http://www.finalmtn.com/ilfossil/neosp2.html
Anthracospirifer
at http://www.itano.net/fossils/belden/spirif1s.htm