Porphyrocrinus Gislen 1925
Porphyrocrinus Gislén, 1925 Diagnosis. Aboral cup at least slightly conical, usually taller than wide; pairs or triplets of brachials joined by ligamentary articulation proximally; up to 5 articulations between ligamentary articulations distally; several to many proximal columnals thin and discoidal...
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Zenodo
2016
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Online Access: | https://dx.doi.org/10.5281/zenodo.6069865 https://zenodo.org/record/6069865 |