Diagnosis, occurrence, images, and references of the species.
List of extinct and extant families, genera and species.
The only fossil species of the genus Cephalodiscus.
Three coenecia (two very young) from Stock Point, Plymouth.
Results of the amino-acid analysis of the skeleton of Rhabdopleura and Cephalodiscus.
Graptolites collected from the Athens Shale formation (Ordovician age) near Montevalo, Alabama.
A free graptolite researcher and a Rosicrucian Frater. Research interests, primarily in sessile gra...
Pyritization and deformation of graptolites by Ch.M. Witkowski.