Acropora sp. A.

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CC species number = 26.6

Photograph: Scale bar is 1 cm. Image is of CCD 8412. (Salina St. Michiel, Seroe Domi Formation, Curacao. Mio-Pliocene).

Morphologic Description:

Colony Form: plocoid
Colony Shape: primarily columnar or digitate in shape, with infrequent branch divisions
Colony Size: columns 3-6 cm thick
Corallite Spacing: 1.5-2.5 mm
Budding Type: mostly extramural
Corallite Diameter: radial corallites 0.8-1.2 mm, variable
Calical Surface Shape: subimmersed, elliptical, dimidiate
Axial and Radial Corallite Characteristics: poorly-developed axial corallites and irregularly arranged radial corallites
Coenosteum Width: narrow
Internal Coenosteum Texture: low porosity
Coenosteum Surface: strongly costate with spinules
Relative Septum Thickness: strong
Lobes: none
Columella Structure: absent
Wall Structure: septothecal
Wall Characteristics: 0.3-0.5 mm thick


Mio-Pliocene: Seroe Domi Formation, Curacao N.A.