82 research outputs found

    New or poorly understood Tertiary sepiids from southeastern United States and Mexico

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    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.

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    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)

    Comparative morphology, phylogeny, and classification of fossil Coleoidea

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    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

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    Volume: 21Start Page: 268End Page: 29

    Lower Cretaceous diplobelinid belemnites from the Anglo-Paris Basin

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    Volume: 24Start Page: 115End Page: 14

    Malayomaorica gen. nov. (Family Aviculopectinidae) from the Indo-Pacific Upper Jurassic; with comments on related forms

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    Volume: 6Start Page: 148End Page: 16

    Morphology and taxonomic status of the Jurassic belemnite \u27Rhopaloteuthis\u27 somaliensis Spath 1935

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    Volume: 15Start Page: 158End Page: 18
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