Westergaardodina bicuspidata


Sugerowana cytacja: Moczyński 2017. Westergaardodina bicuspidata Muller 1959. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/viewrev/Species/Westergaardodina+bicuspidata)

Diagnoza

Completely reduced cusp, strongly thickened processes parallely arranged, leaving only a narrow fissure in between. Basal cavity restricted only to the distal margins of the processes.

Porównanie

This is a typically Late Cambrian species which has however been repeatedly reported also from the early and even middle Ordovician. It seems highly unlikely that the specimens from the Mójcza Limestone had been reworked from Cambrian strata because the Cambrian in the Kielce area is developed only in a coarse clastic facies. The species is more likely a survivor of its long ranging lineage.

Autekologia


Występowanie geograficzne

Zasięg czasowy

In the Mójcza Limestone found at the level 0.8 m and immediately below the discontinuity surface; Lenodus variabilis Zone, Kundan, Arenig/Llanvirn boundary (nera the base of Darriwillian).

Materiały muzealne

ZPAL

Literatura

Dzik, J. 1994a Conodonts of the Mójcza Limestone. In: J. Dzik, E. Olempska, & A. Pisera. Ordovician carbonate platform of the Holy Cross Mountains. Palaeontologia Polonica 53, 43-128. 

Specyfikacja

Królestwo
ANIMALIA 

Typ
CHORDATA 

Podtyp
CONODONTA

Gromada
CONODONTOPHORIDA

Podgromada
PARACONODONTA

Rząd
Westergaardodinida

Rodzina
Westergardodinidae

Rodzaj
Westergaardodina

Gatunek
Westergaardodina bicuspidata

Synonimy
Westergaardodina bicuspidata n. sp.: MULLER, 1959; Westergaardodina hicuspidata MULLER; HAMAR, 1966; Westergaardodina ex gr. hicuspidata MULLER; DZIK, 1976; Westergaardodina bicuspidara MULLER; LANDING in FORTEY et al., 1982

Populacja typowa gatunku

Holotyp

Locus typicus

Pr.-Nr. 836, NE Germany. 

Stratum typicum

Erratic boulder of dark limestone with numerous Furnishina furnishi and Ctenopyge
flahellifera.


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Created by Administrator on 2017/04/19 14:53

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