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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 ▪ Опубликовано в печати 1 августа 1995 г.
Литература
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).
Stukalina, G.A. 1964. Ordovician, Silurian and Early Devonian Crinoids from Central Kazakhstan and their stratigraphic significance: Abstract of Ph. D. thesis. 20 p. Leningrad. (In Russian).
Stukalina, G.A. 1981. Crinoids in the Ordovician, Silurian and Lower Devonian stratigraphy of the USSR: Abstract of Dr. Sci. thesis. 50 p. (In Russian).
Stukalina, G.A. 1985. Zonal subdivision of the Lower and Middle Paleozoic in the USSR territory based on crinoids. Paleontol. Sbornik, Lvov, 22:50-56. (In Russian).
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).
Stukalina, G.A. 1986b. Zakonomernosti istoricheskogo razvitiya crinoidey v rannem i srednem paleozoe SSSR [Pattern of historical evolution of crinoids in the Early and Middle Paleozoic of the USSR]: 1-142. Moscow. (In Russian).
Stukalina, G.A. 1988. Studies in Paleozoic crinoidcolumnals and -stems. Palaeontographica, Abt. A, 204(1/3): 1-66.
