. Bulletins of American paleontology. . Text-fig. 23. — Cross-section of Eudmetoceras (Euaptctoccras) sp. aff. E. nucleospinosum Westermann, probably complete phragmocone, loc. USGS 12405 (USNM 160231) ; X 1- Text-fig. 24. — Cross-section of Eudmetoceras (Euaptctoccras) klimakom- phalum discoidale, n. subsp., phragmocone (section of ultimate half whorl ro- tated bv 20°), loc. USGS 19863 in the Pseudocidoccras zonule (USNM 160230) ; X 1. doubt that all specimens from locality USGS 12405 belong to a single variable species. At 12-15 mm diameter, the whorls become rapidly compressed and involute.
. Bulletins of American paleontology. . Text-fig. 23. — Cross-section of Eudmetoceras (Euaptctoccras) sp. aff. E. nucleospinosum Westermann, probably complete phragmocone, loc. USGS 12405 (USNM 160231) ; X 1- Text-fig. 24. — Cross-section of Eudmetoceras (Euaptctoccras) klimakom- phalum discoidale, n. subsp., phragmocone (section of ultimate half whorl ro- tated bv 20°), loc. USGS 19863 in the Pseudocidoccras zonule (USNM 160230) ; X 1. doubt that all specimens from locality USGS 12405 belong to a single variable species. At 12-15 mm diameter, the whorls become rapidly compressed and involute. The intermediate phragmocone whorls are tightly coiled (U-10-16%), subtrigonal ("lanceolate") in section with nar-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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