Conodonts are zoologically enigmatic, toothlike phosphatic microfossils occurring in marine sedimentary rocks ranging in age from Cambrian to Triassic. Dimpled spheres of less than 1 millimeter in diameter are sporadic associates of conodonts and have identical chemical composition and microstructure. Mineralogy, morphology, and occurrence of these spheres suggest that they are pearls secreted by the conodont-bearing animal.
NAME CHANGES IN RELATION TO GROUP CATEGORIES SPECIFIC AND SUBSPECIFIC NAMESDetailed consideration of valid emendation of specific and subspecific names is unnecessary here because it is well underxu
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