USGS professional paper · 1927 · 110 citations · 0 references
Life SciencesMarine BiologyZoologyInvertebrate ZoologyMarine EcologyMarine Invertebrate BiologyArthropod PaleontologyInvertebrate EvolutionInvertebrate Fossil TaxonomyInvertebrate SystematicsInvertebrate Trace FossilsMarine Invertebrate ZoologyExceptional Invertebrate FossilsMarine Invertebrate AnatomyMarine Invertebrate DiversityMarine Invertebrate PhylogenyMarine Reptile Paleobiology