On the taxonomic position of the Silurian genus Dastaricrinus (Crinoidea)
G.A. Stukalina
Abstract. Following a taxonomic evaluation of its diagnostic characters, the genus Dastaricrinus is revised and its systematic position clarified. Morphogenetic changes of the decilobate ligamentary field of the articular facets of the stem columnals make dastaricrinuses sharply distinct among known pentamerate Silurian crinoids and allow them to be separated in a new family. The paper presents a description of the family Dastericrinidae fam. n. and four species: Dastaricrinus digitatus Stukalina, 1986 (type species of the genus), D. primitivus (Milicina, 1973), D. barbarus sp. n. and D. petaloideus sp. n.
Zoosystematica Rossica, 1994, 3(2): 203–206 ▪ Published in print 1 August 1995
References
Milicina, V.S. 1973a. On Silurian and Lower Devonian Crinoids on the western and eastern slopes of the North and Mid-Urals. Trudy Sverdlovsk, gorn. Inst., 43: 3-26. (In Russian).
Milicina, V.S. 1973b. Ordovician, Silurian and Early Devonian Crinoids from North and Middle Urals: Abstract of Ph. D. thesis. 31 p. Sverdlovsk. (In Russian).
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Stukalina, G.A. 1986a. Crinoidea. In: Nikitin, I.F. & Bandaletov, S.M. (eds). Tokrauskiy gorizont verkhnego silura [The Tokrau horizon of the Upper Silurian J: 77-86. Alma-Ata. (Series: Balkhash segment). (In Russian).
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Stukalina, G.A. 1988. Studies in Paleozoic crinoidcolumnals and -stems. Palaeontographica, Abt. A, 204(1/3): 1-66.
