82 research outputs found
New or poorly understood Tertiary sepiids from southeastern United States and Mexico
40 p., 3 pl., 2 fig.http://paleo.ku.edu/contributions.htm
Synonymy and stratigraphic ranges of Belemnopsis in the Heterian and Ohauan Stages (Callovian-Tithonian), southwest Auckland, New Zealand.
Belemnopsis stevensi, Belemnopsis maccrawi, and Belemnopsis sp. A (Challinor 1979a) are synonymous; B. stevensi has priority. New belemnite material from Kawhia Harbour and Port Waikato, together with graphical study methods, indicates that many small fragmentary specimens associated with B. stevensi in the lower part of its stratigraphic range are probably the same taxon. B. stevensi has been found only in the Middle and Upper Heterian Stage (Lower Kimmeridgian) at Kawhia and only in the Lower Ohauan Stage (Upper Kimmeridgian) at Port Waikato. This apparently disjunct distribution is attributed to poor exposure in the relevant sections. Belemnopsis kiwiensis n.sp., Belemnopsis cf. sp. B, Belemnopsis sp. B, Belemnopsis sp. D, and Belemnopsis spp. are associated with B. stevensi near the lowest known point in its stratigraphic range. The distribution of stratigraphically useful belemnites within the Heterian and Ohauan Stages is: Conodicoelites spp. (Lower Heterian; correlated with Lower Callovian); Belemnopsis annae (Lower and Middle Heterian; Lower Callovian/Lower Kimmeridgian); Belemnopsis stevensi (Middle Heterian/Lower Ohauan; Kimmeridgian); Belemnopsis keari (Upper Heterian; Kimmeridgian); Belemnopsis trechmanni (Upper Ohauan; Upper Kimmeridgian/Middle Tithonian). The apparently extreme range of Belemnopsis annae remains unexplained. Klondyke Sandstone (new) is recognised as the basal member of Moewaka Formation (Port Waikato area)
Ammonite Faunal Dynamics Across Bio-Events During the Mid-and Late Cretaceous Along the Russian Pacific Coast
JagtâYazykova, E.A. 2012. Ammonite faunal dynamics across bioâevents during the mid â and Late Cretaceous along th
Comparative morphology, phylogeny, and classification of fossil Coleoidea
162 p., 25 pl., 15 fig.http://paleo.ku.edu/contributions.htm
Belemnites mucronatus Link, 1807 (Cephalopoda, Belemnitida): proposed designation of a neotype under the Plenary Powers
Volume: 21Start Page: 268End Page: 29
Proposed use of teh plenary powers to preserve the generic name Aucella Keyserling, 1846 (Class Lamellibranchiata, Order Anisomyaria, Family Aviculidae) and the specific name of its type species "Avicula mosquensis" von Buch, 1884, and to suppr
Volume: 11Start Page: 158End Page: 16
Lower Cretaceous diplobelinid belemnites from the Anglo-Paris Basin
Volume: 24Start Page: 115End Page: 14
Malayomaorica gen. nov. (Family Aviculopectinidae) from the Indo-Pacific Upper Jurassic; with comments on related forms
Volume: 6Start Page: 148End Page: 16
Morphology and taxonomic status of the Jurassic belemnite \u27Rhopaloteuthis\u27 somaliensis Spath 1935
Volume: 15Start Page: 158End Page: 18
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