Platycrinitidae Austin & Austin, 1842
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publication ID |
https://doi.org/10.4202/app.01159.2024 |
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persistent identifier |
https://treatment.plazi.org/id/03FAB824-FC29-FF91-FCFB-FA81FD2FFEDB |
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treatment provided by |
Felipe |
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scientific name |
Platycrinitidae Austin & Austin, 1842 |
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Family Platycrinitidae Austin & Austin, 1842 Platycrinitidae indet.
Fig. 3A View Fig .
Material.—PMSLJ Ba381; well-preserved columnal on a bedding surface; Trogkofel Group, Permian (middle to upper Artinskian), near Dovje, Slovenia.
Remark.—On a small limestone piece, crinoid columnals and pluricolumnals, brachiopods, and bryozoans are preserved ( Fig. 3A View Fig ). One columnal on this piece is elliptical and has the articular ridge oriented symmetrically along the widest portion of the columnal facet. This columnal has a maximum diameter of 12.6 mm and a minimum diameter of 7.4 mm, and it belongs to the Platycrinitidae . Such columnals were once regarded as diagnostic for the genus Platycrinites . However, now this basic columnal morphology is recognized as a family character for the Platycrinitidae ( Ausich and Kammer 2009) . During the Permian, this form of columnal could belong to Platycrinites Miller, 1821 ; Neoplatycrinus Wanner, 1916 ; or Pleurocrinus Austin and Austin, 1843 .
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