Fromentellia

Ferry, 1863: 217

Type Species

Fromentellia fabryana Ferry, 1863: 227, fig. 11: 1, 1a; Original Designation Ferry, 1863: 227

Type Specimen: Holotype; MNHN MO3101; Not Traced; Dry Preserved

Type Locality: Chatillon–sur-Seine (Côte-d-Or), France. Bathonian , Middle Jurassic

Diagnosis

Colony meandroid, series directed radially from the central corallite, monolinear, and composed of large corallites with well marked centres and lamellar linkages; the radial elements costoseptal in type. Between series of calices a depression is present. Septa thick, their surface smooth. Columella absent.Endotheca made of extended dissepiments. Increase by intracalicular budding with lamellar linkages. Holotheca present.

Comparisons

In size of corallites it is similar to the species described as Complexastraeopsis Morycowa,1974 but differs from it in wide depressions between series and thick septa.

Remarks

The structural features typical of the genus were not re-considered in modern literature. Only the type species is known. Late Jurassic F. rupellensis (d'Orbigny, 1850) attributed by Ferry to Fromentelia, cannot be maintained in this genus because of its montlivaltiid micromorphology of septa.

Distribution

• Western Europe; Middle Jurassic - Late Jurassic

This page has been in preparation since 18-Aug-2009 17:45

This version was contributed by Bernard Lathuilière on 06-Apr-2013 09:37.

Page authors are: Ewa Roniewicz. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Bernard Lathuilière