Reference Detail of
PUBLICATION
Edit Publication          Add/Edit Sample          Sample List
Authors: Berry, William B. N.
Editors:
Date: /1967
Title: Monograptus hercynicus nevadensis n. subsp., from the Devonian in Nevada
575-B , , B26-B-31 ,
Host: U.S. Geological Survey Professional Paper:
Document Type: Article\Abst.\Chapter\report
Annotation: Abstract.--A new subspecies of Monograptus hercynicus, M. hercynicus nevadensis, is described from two localities in Nevada. One locality, near Carlin, is in Western assemblage rocks; the other, in Coal Canyon in the Simpson Park Mountains, is in Eastern assemblage rocks. The new subspecies has a greater width than European members of the species but is generally similar in other characteristics. The graptolite is indicative of a probable Siegenian age for the beds from which it came, and necessitates reconsideration of denoting the Silurian-Devonian boundary on the basis of the last appearance of monograptids.
UserNote
No Data (D62-SD) , Carlin East , near Carlin, Nev. (Carlin Quadrangele, W1/2 sec. 34, T. 32 N., R. 52 E. (from Berry, 1967, p. B26). "The locality is in the W1/2 sec. 34, T. 32 N., R. 52 E.: and "rock is almost black to pale brown siltstone, some of which is very carbonaceous. It is in a formation that makes up part of the upper plate of the Roberts thrust" (description from Berry, 1967, p. B27)
Monograptus hercynicus nevadensis n. subsp.