Lobophyllia semisulcata Michelin, 1843 – p.89, pl. 17, fig.8; Monotypy
Type Specimen: Lectotype; ; Lost; Unknown
Type Locality: Oxfordian (Upper Jurassic) of Maxey-sur-Vaize, Saint-Mihiel, and Verdun (France)
Phaceloid corallum with corallites cylindrical to elliptical in section. Strong costae proximally covered by a tectura more or less developed according to species. Intracalicular increase, Radial elements compact, mostly free, occasionally linked at the columella, bicuneiform mostly straight, or slightly curved, very unequal in length and thickness. Some septa lonsdaleoid or apophysal. Distal edge smooth, inner edge with flabelliform auriculae, lateral faces with sharp granules, no palus. Microstructure Rhipidogyrid. Radial symmetry difficult to decipher, bilateral symmetry marked by elongation of the corallite, slight curvature of septa and lamellar columella. Endotheca present, Synapticulae absent, wall probably paraseptothecal.
Some morphological transitions can be considered with solitary forms – Rhipidogyra – and massive meandroid forms – Psammogyra
23 Jurassic nominal species. Four nominal species in Cretaceous among which three have already been reclassified
For distribution, see paleogeographical maps in Martin-Garin B , Lathuilière B and Geister J (2012) The shifting biogeography of reef corals during the Oxfordian (Late Jurassic). A climatic control? Palaeogeography, Palaeoclimatology, Palaeoecology 365–366:136–153
- Western Europe, Southern Europe, Central Europe, Eastern Europe, North Africa, Central Asia, East Asia; Late Jurassic - Early Cretaceous
This page has been in preparation since 19-Aug-2009 13:16
This version was contributed by Bertrand Martin-Garin on 20-Nov-2012 10:39.
Page authors are: Bertrand Martin-Garin. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Bernard Lathuilière