Aplosmilia

Orbigny, 1849

Type Species

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)

Classification

• Family: Rhipidogyridae Koby, 1905

Diagnosis

Phaceloid rhipidogyrid.

Description

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.

Comparisons

Some morphological transitions can be considered with solitary forms – Rhipidogyra – and massive meandroid forms – Psammogyra

Remarks

23 Jurassic nominal species. Four nominal species in Cretaceous among which three have already been reclassified

Distribution

• 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