Dermosmilia
Koby, 1884, p. 194
Type Species
Dermosmilia divergens Koby, 1884, p. 196, pl. 51 fig. 6-8; Subsequent Designation Wells 1936, p. 107
Type Specimen: Syntype; NMB D 4510, D 4511 and D 4512; Verified; Dry Preserved
Type Locality: Oxfordian (Upper Jurassic), La Caquerelle, Soyhières (Switzerland).
Syntypes O237 and O 238 from MJSN Musée Jurassien des Sciences naturelles of Porrentruy were not figured until now. Three other syntypes D 4510, D 4511 and D 4512 from Basel correspond to the Koby’s figures. Specimens D 4510, D 4511 were softly treated by sandblasting in nov. 2011 by A. Heintz in order to see the septal apparatus, which was completely hidden by the matrix. A syntype is also present in Geneva (61528).
Classification
Description
Phaceloid-dendroid corallum with cylindrical to compressed slightly infundibuliform corallites. No epitheca but subequal granulated costae which occasionally show some changes in direction. Intracalicinal increase. Radial elements compact or subcompact (pores at the inner edge), generally anastomosed in the columellar space. Small septa are also occasionally anastomosed in a contratingent mode. Septa rather equal in thickness from outer edge to inner edge but unequal from a septum to the neighbouring one. Straight to slightly curved. Distal edge with equal regular teeth, inner edge producing trabeculae that participate in the papillose columella, lateral faces with strong diverse ornamentation of granules flattened or not. No pali.. Hexameral symmetry not deciphered, bilateral symmetry marked with the elongation of the columellar space and/or by intracalicinal increase. Endotheca made of vesicular dissepiments sloping down abruptly near the wall, synapticulae present, wall probably parathecal.
Remarks
19 nominal species in Jurassic and 7 in Cretaceous (Loser 2000).
Distribution
- Western Europe, Southern Europe, Central Europe, Eastern Europe, North Africa, Central Asia, East Asia, Southeast Asia; Middle Jurassic - Early Cretaceous
This page has been in preparation since 18-Aug-2009 16:24
This version was contributed by Bernard Lathuilière on 12-Nov-2013 17:07.
Page authors are: Bernard Lathuilière Ewa Roniewicz. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Bernard Lathuilière
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