Antiguastrea
Vaughan, 1919, p. 401
Type Species
Astraea cellulosa Duncan, 1863, p. 417, pl. 13, fig. 10; Original Designation Vaughan, 1919: 401
Type Specimen: Holotype; NHMUK R34344; Verified; Dry Preserved
Type Locality: "Conglomerate of Antigua" (Duncan, 1863); Antigua Formation (Late Oligocene)
Classification
Diagnosis
Subplocoid to plocoid colonies; extracalicular budding; cylindrical or subcylindrical corallites, > 3.5 mm in diameter; para- to septothecal; 3-5 septal cycles, with first and second cyles slightly subequal; weak or absent paliform lobes; well-developed lamellar columella; thin costae; tabulo-vesicular coenosteum; well-developed endotheca.
Comparisons
Antiguastrea is morphologically most similar to Tarbellastraea; both genera are plocoid with extracalicular budding, and have thin costae, a tabulo-vesicular coenosteum, and a lamellar columella. Antiguastrea differs from Tarbellastraea by having less coenosteum, larger corallites, more septal cycles, and better developed secondary septa. Antiguastrea is also similar to the Montastraea annularis complex in colony form, but differs by having a lamellar columella, thin costae, partially vesicular coenosteum, and weak septal dentition. It is assigned to the Family Merulinidae based on its similarity to the Montastraea annularis complex.
Remarks
The micromorphology and microstructure of Antiguastrea have not been studied in detail. Vaughan (1919, p. 401) described the septal margins as being "very obscurely dentate, subentire".
Distribution
- Central Asia; Late Jurassic
- Central Asia; Late Cretaceous
- Caribbean; Late Cretaceous
- Southern Europe, Caribbean; Eocene - Oligocene
- Southern Europe; Miocene
- North Africa; Miocene
- Australasia; Miocene
- Caribbean; Miocene
Source: Paleobiology Database (18 August 2011).This page has been in preparation since 18-Jul-2010 20:06
This version was contributed by Ann Budd on 21-Jun-2012 20:12.
Page authors are: Ann Budd Danwei Huang. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Ann Budd
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