Calamoseris

Alloiteau, 1952, p. 673

Type Species

Eunomia nodosa d'Orbigny 1850, p.32; Original Designation

Type Specimen: Lectotype; MNHN R06807; Verified; Dry Preserved

Type Locality: Kimmeridgian (Upper Jurassic) from Oyonnax (Ain, France).

Paralectotypes MNHN A33480 are available with two thin sections. The lectotype was designated by Alloiteau 1957 (abusive designation of a holotype ICZN art. 74.6)

Description

Branching phaceloid colony with a knobbly aspect produced by growth (annual ?) rhythms. Intracalicular increase. Calice irregular in outline, not circular. Radial elements are abundantly but irregularly perforated and anastomosing costosepta. Simple trabeculae 120-150 microns in diameter. Fan system. Thin equal finely dentate costae, Numerous synapticulae. Rudimentary parietal subpapillose columella. The wall is a pennular envelope.

Remarks

The absence of endotheca described by Alloiteau 1957, p. 178 is doubtful. Gill 1967 described clear pennular and endothecate corals under this name. 14 nominal species and a non nominotypical subgenus Aggomorphastraea were described in this genus which deserves a revision.

Distribution

• Western Europe, Southern Europe, Central Europe, Eastern Europe, Subsaharan Africa, South Asia; Middle Jurassic - Late Jurassic

This page has been in preparation since 07-May-2009 09:45

This version was contributed by Bernard Lathuilière on 07-Feb-2012 15:31.

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

The editor is: Bernard Lathuilière