Alloiteau, 1958, p. 82
Ampakabastraea ampakabensis Alloiteau 1958 p. 83; Original Designation
Type Specimen: Holotype; MNHN M05011; Verified; Other
Type Locality: West of Ampakabo (SW Madagascar) Bathonian
the holotype is one sectioned specimen with 2 thin sections. The village of Ampakabo migrated some kilometres southward since 1958.
Massive subcerioid colony producing simple superficial corallites by intracalicular budding (clearly cerioid on lower surface of the type specimen). Incomplete theca made of various elements (costae, dissepiments, synapticules). Compact confluent to subconfluent costosepta, generally free but sometimes anastomosed by their inner edge. Ornamentation of septa poorly known, some granules seem to be flattened. Trabecules 260-320 micrometers. radial and bilateral symmetry marked by the torsion of septa. Small well marked calicular pit on upper surface but septa joining in the center in depth. No holotheca visible (lower face of the type bioeroded). Endotheca made of vesicular dissepiments
The genus seems to be very close of Isastrea. The ornamentation of septa with flattened granules could be a significant difference.
Seven Jurassic nominal species
- North Africa; Early Jurassic - Middle Jurassic
- Western Europe; Middle Jurassic
- Subsaharan Africa; Middle Jurassic
- South Asia; Middle Jurassic
- North America; Middle Jurassic
This page has been in preparation since 07-May-2009 07:20
This version was contributed by Bernard Lathuilière on 06-Feb-2010 09:34.
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