Lower Homerian (Silurian) Pristiograptus from the Zdanow section, Bardo Mountains (Sudetes, Poland) and their palaeobiogeographical implications

被引：2

作者：

Radzevicius, Sigitas ^{[1
]}

Raczynski, Pawel ^{[2
]}

Whittingham, Misha ^{[3
]}

机构：

[1] Vilnius Univ, Dept Geol & Mineral, MK Ciurlionio 21-27, LT-03101 Vilnius, Lithuania

[2] Univ Wroclaw, Inst Geol Sci, Pl Maksa Borna 9, PL-50205 Wroclaw, Poland

[3] Carleton Univ, Dept Earth Sci, 1125 Colonel By Dr, Ottawa, ON K1S 5B6, Canada

来源：

BULLETIN OF GEOSCIENCES | 2020年 / 95卷 / 02期

关键词：

Homerian; Silurian; Bardo Mountains; Sudetes; Poland; Pristiograptus; Graptoloidea; EVOLUTION; WENLOCK; LLANDOVERY; GRAPTOLITE; BIOSTRATIGRAPHY; SPECIATION; BOUNDARY; TERRANES; MARGIN; PART;

D O I：

10.3140/bull.geosci.1775

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Pristiograptus dub/us pseudodubius and Pristiograptus lodenicensis were collected from outcrops of black pelagic shales of the Zdanow section of the Bardo Mountains (Sudetes, Poland). The species are easily distinguished from one another in that P. lodenicensis has distinct lobate processes on its thecae, whereas those of P. d. pseudodubius are comparatively unornamented. Our findings indicate that the age of the Lower Graptolitic Shales in the Zdanow is the middle part of the C. lundgreni graptolite Hiozone (lower Homerian, upper Wenlock). The presence of P. d. pseudodubius at this site adds another locality to its global range, while the presence and abundance of P. lodenicensis further indicates the restriction of the latter species to the Rheic palaeo-ocean.

引用

页码：231 / 242

页数：12

共 79 条

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