A new rhizangiid genus from the Miocene of North America (Sclerangia n. gen.; Florida, USA)

Baron-Szabo, Rosemarie; Cairns, Stephen D.

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Issue Date

2015-04-30

Author

Baron-Szabo, Rosemarie

Cairns, Stephen D.

Publisher

Paleontological Institute

Type

Article

Article Version

Scholarly/refereed, publisher version

Is part of series

Paleontological Contributions;13

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Abstract

The colonial rhizangiid genus Sclerangia n. gen. is described from the Miocene of the USA (Chipola Formation, Florida). The new genus is characterized by plocoid to subcerioid polyp integration, cylindrical to subcylindrical or tympanoid corallites, and an endotheca that is generally absent or made of a very small number of vesicular dissepiments. Compared to other rhizangiid genera, the new taxon is characterized by rather weakly dentate septa. In addition, the new genus differs from all the rhizangiid genera by its consistent encrustation of dead gastropod shells that are inhabited by sipunculid worms.

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