Upper Jurassic corals from Chihuahua
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Abstract
An Upper Jurassic coral fauna from Mexico is described. The whole fauna derives from Sierra del Águila, in the north part of the State of Chihuahua. Sevem especies are described, six of which (Actinastrea crasso-ramosa, Actinastrea tenuisepta, Thamnasteria M'Coyi, Thamnasteria lamourouxii, Cladophyllia dichotoma, Monstastrea cyclops) are correlated with european species already known and one is new (Placophyllia chihuahuensis).
A species of sea urchin, Caenocidaris cf. C. cucumiifera (Agassiz) (Echinoidea-Cidaroida) was found in asociation with the cora fauna. It is described at the end of this paper.
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