Peneroplidae

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Family:  '''Peneroplidae'''
Family:  '''Peneroplidae'''
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Genera in text
 
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The Peneroplidae is a family of miliolid foraminifera, included in the superfamily Soritacea, in which the test is close coiled in the early growth stages, with simple, non-subdivided chambers,  but may become multispiral, serial, or annular in the later stages. Apertures vary according to genus and are found on the final septal, or apertural, face.  As with the order the test is composed of high-Mg calcite and is porcelaneous and at least in latter states, imperforate.  Living genera include ''Peneroplis'' (type), ''Dendritina'', and ''Monalysidium''.
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The Peneroplidae is a family of miliolid foraminifera, included in the superfamily Soritacea, in which the test is close coiled in the early growth stages, with simple, non-subdivided chambers,  but may become multispiral, serial, or annular in the later stages. Apertures vary according to genus and are found on the final septal, or apertural, face.  As with the order the test is composed of high-Mg calcite and is porcelaneous and at least in latter stages, imperforate.  Living genera include ''Peneroplis'' (type), ''Dendritina'', and ''Monalysidium''.
The Peneroplidae are the earliest of the Soritacea, having their beginning in the Middle Triassic, and are preceded, within the Miliolida, by the Calcivertellidae, Ophthalmidiidae, and Cyclogyridae; the Cyclogyridae being the most likely ancestral group.   
The Peneroplidae are the earliest of the Soritacea, having their beginning in the Middle Triassic, and are preceded, within the Miliolida, by the Calcivertellidae, Ophthalmidiidae, and Cyclogyridae; the Cyclogyridae being the most likely ancestral group.   

Revision as of 12:21, 15 March 2011

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