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Nebraskaconus whitei

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Nebraskaconus whitei n. gen. n. sp. (1, 2) Part and counterpart, respectively, of holotype UNSM 8161 showing a three-dimensional ink sac (is) filled with ink, part of the body chamber (bc), and a crushed breviconic phragmocone (ph); (3), fine lirae between the septa of the phragmocone suggesting the conch had a “wrinkle layer”, which if true, then the test of the conch and the sheath-like rostrum must have been very thin. (4–7) Starkites compressus n. gen. n. sp. (4, 5) Part and counterpart, respectively, of holotype UNSM 16562A showing the three-dimensional ink-filled sac (is), the breviconic phragmocone (ph), and aligned circular septal necks (sn). Note there is no trace of a body chamber; (6) enlargement of the ink-filled sac in position in front of the terminal septum without any trace of a body chamber; (7) enlargement of the cyrtochoanitic septal necks (sn) as donut-shaped structures. Scale bars are 5 mm.

Nebraskaconus whitei n. gen. n. sp. ( 1, 2 ) Part and counterpart, respect... Available to Purchase

Published: 18 October 2017
Figure 2 Nebraskaconus whitei n. gen. n. sp. ( 1, 2 ) Part and counterpart, respectively, of holotype UNSM 8161 showing a three-dimensional ink sac (is) filled with ink, part of the body chamber (bc), and a crushed breviconic phragmocone (ph); ( 3 ), fine lirae between the septa
Journal Article

New Pennsylvanian coleoids (Cephalopoda) from Nebraska and Iowa, USA Available to Purchase

Royal H. Mapes, Larisa A. Doguzhaeva
Published: 18 October 2017
Journal of Paleontology (2018) 92 (2): 146–156.
DOI: https://doi.org/10.1017/jpa.2017.79
...Figure 2 Nebraskaconus whitei n. gen. n. sp. ( 1, 2 ) Part and counterpart, respectively, of holotype UNSM 8161 showing a three-dimensional ink sac (is) filled with ink, part of the body chamber (bc), and a crushed breviconic phragmocone (ph); ( 3 ), fine lirae between the septa...
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View PDF for article title, New Pennsylvanian coleoids (Cephalopoda) from Nebraska and Iowa, USA
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