Early Silurian crinoid diversification on Baltica: Euspirocrinus varbolaensis sp. nov.

被引:0
|
作者
Ausich, William I. [1 ]
Wilson, Mark A. [2 ]
Toom, Ursula [3 ]
机构
[1] Ohio State Univ, Sch Earth Sci, 125 South Oval Mall, Columbus, OH 43210 USA
[2] Coll Wooster, Dept Earth Sci, 1189 Beall Ave, Wooster, OH 44691 USA
[3] Tallinn Univ Technol, Dept Geol, Ehitajate Tee 5, EE-19086 Tallinn, Estonia
关键词
Crinoidea; Estonia; Llandovery; Rhuddanian; Silurian; LATE ORDOVICIAN; EXTINCTION; EVOLUTION; ESTONIA;
D O I
10.3176/earth.2024.05
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This article describes the crinoid Euspirocrinus varbolaensis sp. nov. from the early Silurian (Rhuddanian) of northern Estonia. Discovered within the lower Rhuddanian strata in the Reinu quarry, Rapla Parish, this is the second Rhuddanian species of Euspirocrinus from Estonia. Its discovery further documents the rapid faunal recovery of early Silurian crinoids following the Late Ordovician biotic crisis. This find supports the hypothesis that the early Silurian recovery of crinoids was primarily the result of the diversification and migration of Laurentian clades.
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页码:37 / 44
页数:8
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