Image: Walcott Cambrian Geology and Paleontology II plate 28

Description: Plate 28: Middle Cambrian Crustaceans (Opabinia, Nathorstia, and Naraoia) 1. Opabinia regalis Walcott = Opabinia regalis Walcott, 1912 2. Nathorstia transitans Walcott = Olenoides serratus (Rominger, 1887) 3. Naraoia compacta Walcott = Naraoia compacta Walcott, 1912 4. Naraoia compacta Walcott = Naraoia compacta Walcott, 1912
Title: Walcott Cambrian Geology and Paleontology II plate 28
Credit: Charles D. Walcott: Middle Cambrian Branchiopoda, Malacostraca, Trilobita, and Merostomata. Smithsonian Miscellaneous Collections, Volume 57, Number 6 (Publication 2051), City of Washington, Published by the Smithsonian Institution, March 13, 1912.
Author: Charles Doolittle Walcott
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