Diploastraeidae
Chevalier and Beauvais, 1987, p. 721
Diagnosis
Colonial, with extracalicular budding only. Corallites monomorphic and discrete (1–3 centers); monticules absent. Coenosteum costate, moderate amount (< corallite diameter). Calice width medium (4–15 mm), with medium relief (3–6 mm). Costosepta not confluent. Septa in ≥ 4 cycles (≥ 48 septa; including very short free septa). Free septa present but irregular. Septa spaced 6–11 septa per 5 mm. Costosepta unequal in relative thickness. Columellae trabecular and spongy (> 3 threads), ≥ 1/4 of calice width. Paliform (uniaxial) lobes absent. Epitheca well developed and endotheca low-moderate (tabular). Tooth base at mid-calice elliptical-parallel. Tooth tip at mid-calice regular (pointed). Tooth height medium (0.3–0.6 mm) and tooth spacing medium (0.3–1 mm), with > 6 teeth per septum. Granules scattered on septal face; weak (rounded). Interarea smooth. Walls formed by synapticulotheca and partial septotheca; abortive septa absent. Thickening deposits in concentric rings with extensive stereome. Costa center clusters strong; > 0.6 mm between clusters; medial lines absent. Septum center clusters strong; > 0.5 mm between clusters; medial lines absent. Transverse crosses absent. Columella centers clustered.
Contains
This page has been in preparation since 02-Oct-2009 17:15
This version was contributed by Danwei Huang on 05-Feb-2014 17:42.
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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