Quasimolites Valent, Fatka, Szabad, Micka & Marek, 2015, gen. nov

Autor: Valent, Martin, Fatka, Old��ich, Szabad, Michal, Micka, V��clav, Marek, Ladislav
Rok vydání: 2015
Předmět:
DOI: 10.5281/zenodo.5685187
Popis: Genus Quasimolites gen. nov. Type species. Quasimolites quasimodo sp. nov. Etymology. Derived from the name of hunchback Quasimodo for the distinct keel on the dorsum. Diagnosis. Conch with slightly vaulted ventral side; dorsal side with a distinct exserted keel. Platyclaviculate operculum with clavicles separated by walls disposed in longitudinal channels. Description. Hyolithid with a subtriangular conch in cross-section. Aperture amblygonal; long ligula with its dorsal margin cut out in its middle. Apertural muscle scars well developed. Apical septa not ascertained. Surface sculpture consisting of fine growth-lines. Operuclum bearing open cardinal processes, broadly diverging and triangular in the cross-section. Thick-walled cardinal shield probably hollow, triangular in outline, with its summit elongated into rounded process. Distinct muscle scars. Surface sculpture of the operculum consisting of growth-lines. Discussion. Quasimolites gen. nov. resembles Carinolithes Sysoev, 1958 by its broad and plain clavicles as well as by the dorsal side provided with a distinct keel. However, the new genus differs in a more distinct keel, the amblygonal aperture, hollow clavicles and a thick-walled cardinal shield. Occurrence. Middle Cambrian, Skryje���T��řovice Basin, Bohemia.
Published as part of Valent, Martin, Fatka, Old��ich, Szabad, Michal, Micka, V��clav & Marek, Ladislav, 2015, Skryjelites auritus gen. et sp. nov. and Quasimolites quasimodo gen. et sp. nov. ��� two new middle Cambrian hyolithids (? Mollusca) from the Czech Republic, pp. 419-426 in Zootaxa 4007 (3) on pages 423-424, DOI: 10.11646/zootaxa.4007.3.8, http://zenodo.org/record/241042
{"references":["Sysoev, V. A. (1958) The superorder Hyolithoidea. In: Orlov, Ya. A., Luppov, N. P. & Druschits, V. V. (Eds.), Principles of Palaeontology. Mollusca, Cephalopoda. Vol. 6. Akademia Nauk, USSR, Moskva, pp. 184 - 190."]}
Databáze: OpenAIRE
Externí odkaz: