. Bulletins of American paleontology. . Text-fiji. 32 a-b. — Cross-sections of Souninia (Alaskocfras) alaskensis, n. subgen., n. sp.; X 1- a- Composite: phragmocone of hoiotype, body chamber from loc. WA 13\v (McM J 1023), both Pseudocidocnas zonule, b. Part of phragmocone at 46 mm I), loc. WA 15 (McM J 1027; cf. pi. 27, fig. 7). Note the hollow-floored ventro-iateral spines up to more than 11 mm in length which were developed from the matrix. Mdlcrial. — ^'\\e liolotype, one almost complete specimen with body chamber, and two fragmentary specimens from scree of WA 10 (McM. J 1021 a) ; one lar
. Bulletins of American paleontology. . Text-fiji. 32 a-b. — Cross-sections of Souninia (Alaskocfras) alaskensis, n. subgen., n. sp.; X 1- a- Composite: phragmocone of hoiotype, body chamber from loc. WA 13\v (McM J 1023), both Pseudocidocnas zonule, b. Part of phragmocone at 46 mm I), loc. WA 15 (McM J 1027; cf. pi. 27, fig. 7). Note the hollow-floored ventro-iateral spines up to more than 11 mm in length which were developed from the matrix. Mdlcrial. — ^'\\e liolotype, one almost complete specimen with body chamber, and two fragmentary specimens from scree of WA 10 (McM. J 1021 a) ; one large plnagmocone from the basal 10 m of WA 10; one phragmocone fragment from scree of WA 13; two poorly preserved incomplete specimens from WA 13w (McM. J 1023) ; two almost complete specimens and one phragmocone from 3 m (McM. J 1027), 23 m and scree of WA 15; two almost com- plete specimens and one damaged phragmocone from USGS 12405. Pseudocidoceras zonule and subjacent (?) shales, Kialagvik For- mation, southeast shore of Wide Bay. Description. —The juvenile whorls (G-IO mm D; McM. J 1021 a) are depressed elliptical in section and moderately evolute (U = 30%). During the next one to two whorls (15-20 mm D),. 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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