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Plagiochasma (echinoderm)
Extinct genus of sea urchins From Wikipedia, the free encyclopedia
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Plagiochasma is an extinct echinoderm genus in the family Pygaulidae.[1]
Species includes:
- Plagiochasma cruciferum (Morton, 1830); Paleocene of Denmark, Belgium, The Netherlands, Trinidad and the United States
- Plagiochasma faringdonense (Wright, 1875); Lower Greensand, Upper Aptian, Early Cretaceous of UK
- Plagiochasma olfersii (L. Agassiz, 1836); Hauterivian, Early Cretaceous of France and Switzerland
- Plagiochasma saurai Forner i Valls, 2016; Barremian, Early Cretaceous of Spain
- Plagiochasma texanum Smith & Rader, 2009; Lower Albian, Texas, USA
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References
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