Undaria sp. A.

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A SEM image is presently unavailable.

Photograph: Scale bar is approx. 0.5 cm. Image is of SUI 63590 (Gurabo Formation, Río Gurabo, Dominican Republic. Mio-Pliocene).

Morphologic Description:

Colony Form: meandroid
Colony Shape: thickened plates
Colline Characteristics: rounded or acute
Series Length: moderately long
Budding Type: intramural
Corallite Diameter: 2.8-4.3 mm
Septa Per Corallite: 19-35 long septa
Lobes: none
Columella Structure: trabecular and discontinuous
Columella Development: prominent
Wall Structure: synapticulothecal

Distribution:

Late Miocene to Early Pliocene: Gurabo Formation, Dominican Republic.
Early Pliocene: Mao Formation, Dominican Republic.