Occurence and revision of genera Oncopareia Bosquet, 1854 (Decapoda: Aastacidea: Thaumastochelidae) and Ctenocheles Kishinouye, 1926 (Decapoda: Axiidea: Ctenochelidae) from the Bohemian Cretaceous Basin

• Autorzy: Kocova-Veselska M. , Hyzny M.
• Języki publikacji: EN

Abstrakty

EN

Ctenocheles Kishinouye, 1926 is a heterochelous ghost shrimp typically with pectinate major claw with long lingers and acicular teeth. Isolated chelipeds are the most common remains in the fossil record of these decapod crustaceans, with several fossil species of the genus described only on the basis of isolated eheliped fragments (Schweitzer & Feldmann 2001). This type of chelipeds evolved homoplastically in different lineages of decapod crustaceans (Tshudy & Sorhannus 2000) and can be easily misidentified as remains of other decapod crustacean taxa as shown in the case from the Bohemian Cretaceous Basin (BCB). Very similar major claw is also known in an astacidean genus Oncopareia Bosquet, 1854, which has been considered as relatively well represented genus in the BCB (Mertin 1941), whereas Ctenocheles has not been identified in the respective area until now. Part of the material attributed to the latter taxon was at the disposal since the 19 century, but because of confused taxonomy of isolated pectinate claws (Feldmann et al. 1990; Tshudy & Sorhannus 2000) its identity has not been recognized and these claws were mistakenly classified as remains of genus Stenocheles Fritsch in Fritsch & Kafka (1887). Later, Mertin (1941) and Glaessner (1969) questionably synonymised Stenocheles with Oncopareia. Reexamination of the Cretaceous decapods deposited in the National Museum in Prague revealed that all supposed specimens of the lobster genus Oncopareia Bosquet, 1854 originating from the Middle Coniacian calcareous elaystones of the Brezno Formation in the BCB actually belong to Ctenocheles. This material together with newly collected specimens from the same locality represents one of the oldest records for this genus and simultaneously the best preserved fossil material of Ctenocheles reported up to date (see also Hyzny et al. in press).

Słowa kluczowe

EN

Oncopareia; Bohemian Cretaceous Basin; Ctenocheles

• Wydawca: Wydawnictwa AGH
• Czasopismo: Geology, Geophysics and Environment
• Rocznik: 2012
• Tom: Vol. 38, no. 4
• Strony: 484--485
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Kocova-Veselska M.

• Charles University in Prague, Faculty of Science, Institute of Geology and Palaeontology; Albertov 6, 128 43 Prague 2, Czech Republic Comenius

autor

Hyzny M.

• University, Faculty of Natural Sciences, Department of Geology and Palaeontology; Mlynska dolina G1, 842 15 Bratislava, Slovakia

Bibliografia

• 1. Feldmann R.M., Jagt J.W.M. & Tshudy D.M., 1990. Late Maastrichtian isopod and decapod Crustacea from Haccourt (Liege), northeastern Belgium. Mededelingen Rijks Geologische Dienst, 44, 1, 23-35.
• 2. Fritsch A. & Kafka J., 1887. Die Crustaceen der bohmischen Kreideformation. Selbstverlag in Commission von F. Rivnac, 1-53.
• 3. Glaessner M.F., 1969. Decapoda. [in:] Moore R.C. (ed.), Treatise on invertebrate paleontology, Part R, Arthropoda 4, 2, Geological Society of America and University of Kansas Press, Boulder and Lawrence, R400-R566.
• 4. Hyzny M., Kocova Veselska M. & Dvorak P., in press. On the occurrence of Ctenocheles (Decapoda: Axiidea: Ctenochelidae) in the Bohemian Cretaceous Basin with description of a new species. Bulletin of Geosciences.
• 5. Mertin H., 1941. Decapode Krebse aus dem subhercynen und Braunschweiger Emscher und Untersenon, sowie Bemerkungen uber einige verwandte Formen in der Ober-kreide. Nova Acta Leopoldina, 10, 149-264.
• 6. Schweitzer C.E. & Feldmann R.M., 2001. New Cretaceous and Tertiary decapod crustaceans from western North America. Bulletin of the Mizunami Fossil Museum, 28, 173-210.
• 7. Tshudy D. & Sorhannus U., 2000. Pectinate claws in decapod crustaceans: convergence in four lineages. Journal of Paleontology, 74, 3, 474-486.