Andemantastraea
Alloiteau, 1951, p. 49
Andemantastraea Alloiteau, 1951, p. 49 is a junior synonym (available and invalid), see Isastrea Milne Edwards and Haime, 1851: p. 102.
Andemantastraea is the type genus of a nominal family. The genus is synonymised with Isastrea. Consequently, Andemantastraea and the Andemantastraeidae should be abandoned (Lathuilière 1988).
Type Species
Synastraea consobrina D'Orbigny , p. 293; Original Designation
Type Specimen: Lectotype; MNHN Coll d'Orb 2537; Verified; Dry Preserved
Type Locality: Bajocian (Middle Jurassic) from Langres (Haute-Marne, France)
A lectotype R05347 was selected figured and redescribed by Thevenin in Cottreau (1911). Unfortunately, it appears that Alloiteau (1951) created the genus Andemanstastraea on the basis of a paralectotype A04764 probably belonging to a different species. It is attested by a written note from Alloiteau at the back side of the card associated to this sample A04764. (This card is now absent in the collection). The paralectotype is assigned to Isastrea bernardiana and the lectotype to Isastrea tenuistriata (Lathuilière 1988)
Classification
Description
Massive cerioid corallum with polygonal corallites. Lower surface without epitheca. Intracalicinal increase, radial elements compact mostly free, attenuated, straight or curved. Distal edge with rhomboidal equal regular teeth, inner edge sometimes anastomosed in depth, lateral faces with subvertical carinae, no pali. Microstructure badly preserved. Hexameral symmetry difficult to decipher, bilateral symmetry characterized by the curvature of septa. Endotheca abundant, columella abent or weak parietal in depth, synapticules in the wall. Wall comparable to Isastrea.
Remarks
Six nominal species were assigned to this genus in Jurassic and one in Cretaceous.
This page has been in preparation since 02-Jun-2007 12:35
This version was contributed by Bernard Lathuilière on 26-Mar-2011 10:37.
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
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