Parastachyocrinus Wanner, 1949
publication ID |
https://doi.org/10.4202/app.01159.2024 |
persistent identifier |
https://treatment.plazi.org/id/03FAB824-FC22-FF9C-FF44-FC86FD44FA12 |
treatment provided by |
Felipe |
scientific name |
Parastachyocrinus Wanner, 1949 |
status |
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Genus Parastachyocrinus Wanner, 1949
Type species: Erisocrinus malaianus Wanner, 1924 . Unknown series of Permian, Timor.
Included species: Parastachyocrinus granulatus ( Wanner, 1924) , Parastachyocrinus inflatus Wanner, 1949 ; Parastachyocrinus malaianus ( Wanner, 1924) , Parastachyo crinusobliquus ( Wanner, 1916), Parastachyocrinus ornatus Wanner, 1949 ; Parastachyocrinus wanneri sp. nov.; Parastachyocrinus sloveniaensis sp. nov.
Remarks. —Even with the revisions proposed herein, some morphological variability exists within species of Parastachyocrinus . Species diagnostic characters, as listed below for each species, are aboral cup symmetry, aboral cup shape, aboral cup outline in basal view, aboral cup plate sculpturing, degree of depression along the aboral cup sutures, presence or absence of a basal concavity, whether infrabasal plates are confined to the basal concavity, whether infrabasal plates are visible in lateral view, relative convexity of basal plates, presence or absence of spines or nodes on basal plates, radial plate convexity, and presence or absence of spines or nodes on radial plates.
Stratigraphic and geographic range. —Unknown series of Permian, Timor; Artinskian, Permian, Slovenia.
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