[Remarks on Eschrichtius polyporus, Hypsibema crassicauda, Hadrosaurus tripos, and Polydectes biturgidus]

E. D. Cope

1869

Article

Proceedings of the Academy of Natural Sciences of Philadelphia 21:191-192

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Taxa discussed in this work:

• Cetotherium polyporum
• Hadrosaurus minor
• Hadrosaurus tripos
• Hypsibema
• Hypsibema crassicauda
• Polydectes
• Polydectes biturgidus