. Bulletins of American paleontology. . K Text-fig. 16 a-b — Bradford'ia? (Pracoppdia) opprliiformis, n. sp. a. Cross-section of phragmocone, loc. USGS 21252 in the Pscudocidoceras zonule (USNM 160923) ; X 1- b. External septal suture, loc. UW WA-11, lot 37 (UW 13180) ; X Derivatio noiniuis. — Reflecting the close affinity to Oppelia Age. — (Lower) .S'. soioerbyi Zone. Diagnosis. — A species of (Praeoppelia) with strongly com- pressed inner whorls, outer whorls compressed subelliptical with inner flanks sloping gently towards the somewhat rounded not markedly raised umbilical mar
. Bulletins of American paleontology. . K Text-fig. 16 a-b — Bradford'ia? (Pracoppdia) opprliiformis, n. sp. a. Cross-section of phragmocone, loc. USGS 21252 in the Pscudocidoceras zonule (USNM 160923) ; X 1- b. External septal suture, loc. UW WA-11, lot 37 (UW 13180) ; X Derivatio noiniuis. — Reflecting the close affinity to Oppelia Age. — (Lower) .S'. soioerbyi Zone. Diagnosis. — A species of (Praeoppelia) with strongly com- pressed inner whorls, outer whorls compressed subelliptical with inner flanks sloping gently towards the somewhat rounded not markedly raised umbilical margin. Material. — The holotype and three somewhat crushed incom- plete internal molds from USGS 19863; one partly crushed internal mold from USGS 19862; one large phragmocone and one crushed juvenile or inner whorl from CAS 29011; one well-preserved phrag- mocone with preserved nucleus and test from USGS 21252 (USNM 160923) ; one large phragmocone with well-preserved septal suture from UW WA-111, lot 37 (UW 13180); one slightly crushed phragmocone, internal mold, from WA 15 at 3 m (J 1039) ; one incomplete phragmocone with preserved nucleus from scree of WA 5 (J 1040) . All from the upper Kialagvik Formation, probably. 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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