Taxonomy and paleobiology of some Middle Cambrian Scenella (Cnidaria) and hyolithids (Mollusca) from western North America

L. R. Babcock, and R. A. Robison

1988

Article

The University of Kansas Paleontological Contributions 121:1-22

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Taxonomy:

• Haplophrentis carinatus belongs to Hyolithes - Matthew (1899)
• Haplophrentis costatus belongs to Hyolithes - Matthew (1901)
• Haplophrentis belongs to Hyolithidae - Babcock and Robison (1988)
• Haplophrentis reesei belongs to Haplophrentis - Babcock and Robison (1988)
• Haplophrentis carinatus belongs to Haplophrentis - Babcock and Robison (1988)
• Haplophrentis costatus belongs to Haplophrentis carinatus - Babcock and Robison (1988)
• Haplophrentis cecrops belongs to Haplophrentis carinatus - Babcock and Robison (1988)