Alloiteau, 1952, p. 643
Considered as a junior synonym of Amphiastrea (Beauvais 1976)
Oyonnaxastraea schlumbergeri Alloiteau, 1952, p.643; Original Designation
Type Specimen: Holotype; MNHN R 10938; Verified; Dry Preserved
Type Locality: Kimmeridgian of Oyonnax (Ain, France)
the holotype includes two thin sections.
Massive cerioid colony. Strictly polygonal calices. Striated epitheca present around each corallite and covering regularly beaded vertical "costae". Regular growth bands. Pachytheca with a zigzag median line (the wall is not really shared between two adjacent corallites as usually in Scleractinia; for this reason it could be described as phaceloid). Marginarium. Taschenknospung. Radial elements are smooth, free or anastomosted septa s.s, flexuous, straight or tortuous. Lonsdaleoid septa present. Septal apparatus with a strong bilateral symmetry. A septum much thicker than others and swollen in the center like a columella. Eccentric axial pit. Large dissepiments steeply sloping down from the wall and climbing again against the columellar septum. No peritheca, no synapticule, no palus.
One nominal species
- Western Europe; Late Jurassic
This page has been in preparation since 19-Aug-2009 16:21
This version was contributed by Bernard Lathuilière on 15-Mar-2014 10:28.
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