-
appeared during the
Cambrian Period. The
oldest ****tive
calcarean genus is
Gravestockia, from the "Atdabanian" (Cambrian
Stage 3) of Australia.
Calcareans are...
-
Gordonicyathus Gordonifungia Goreauiella Graminospongia Graphoscyphus Gravestockia Griphodictya Grossotubenella Guadalupia Guettardiscyphia Guitarra Guizhouchaetetes...
- as
yellow lemon sponge, sphinctozoans, pharetronids, Sycon, Leucetta,
Gravestockia, Grantia, Astraeospongium, Clathrina, Lelapia, Rhaphidonema, and Girtyocoelia)...
