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Paedopronorites, a new Upper Permian (Wuchiapingian) ammonoid from Indonesia (Timor)

  • Brian F. Glenister (a1), W. M. Furnish (a1) and Zuren Zhou (a2)

Extract

Representatives of the ammonoid family Pronoritidae are ancestral medlicottioideans (Order Prolecanitida) characterized by moderately evolute conch and relatively simple sutures. They comprise the ancestral Pronoritinae, characterized by an undivided dorsal lobe, and the descendant Neopronoritinae with bidentate dorsal lobe. The new genus Paedopronorites is interpreted as the terminal neopronoritin paedomorph. It conforms to the pattern displayed by many late Paleozoic taxa (Glenister and Furnish, 1988a, 1988b), being the geologically youngest representative in the lineage, and characterized by small size, sutural simplification, and low abundance.

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Frech, F. 1901. In 1897–1902. Lethaea geognostica oder Beschreibung und Abbildung der für die Gebirgs Formationen bezeichnendsten Versteinerungen. Theil I, Lethaea paleozoica, 2:1788.
Glenister, B. F., and Furnish, W. M. 1988a. Terminal progenesis in Late Paleozoic ammonoid families, p. 5166. In Wiedmann, J. and Kullmann, J. (eds.), Cephalopods—Present and Past. Schweiserbart'sche Verlagsbuchhandlung, Stuttgart.
Glenister, B. F., and Furnish, W. M. 1988b. Patterns in stratigraphic distribution of Popanocerataceae, Permian ammonoids. Senckenbergiana lethaea, 69(1/2):4371.
Spinosa, C., Furnish, W. M., and Glenister, B. F. 1970. Araxoceratidae, Upper Permian ammonoids, from the Western Hemisphere. Journal of Paleontology, 44:730736.

Paedopronorites, a new Upper Permian (Wuchiapingian) ammonoid from Indonesia (Timor)

  • Brian F. Glenister (a1), W. M. Furnish (a1) and Zuren Zhou (a2)

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