Paleonet: Announcing Bulletins of American Paleontology 393 - Jurassic Ammonoids from Nevada by Caruthers et al.

Jonathan Hendricks jrh42 at
Thu Mar 22 12:31:02 GMT 2018

Dear Colleagues,

The Paleontological Research Institution is pleased to announce the
publication of Bulletins of American Paleontology 393, "Pliensbachian–Toarcian
(Early Jurassic) Ammonoids from the Luning Embayment, West-Central Nevada,
U.S.A." by Andrew H. Caruthers, Paul L. Smith, Darren R. Gröcke, Benjamin
C. Gill, Theodore R. Them II, and João P. Trabucho Alexandre. An abstract
and additional details are below.

This monograph may be ordered through PRI's online store ( or on (

Best wishes,

Jon Hendricks


In this study, we describe lower Pliensbachian to lower Toarcian ammonoids
from 10 stratigraphic sections in the New York Canyon and Westgate areas of
the Luning Embayment, Gabbs Valley, and Clan Alpine Mountain Ranges,
west-central Nevada, USA. Ammonoid biostratigraphy based on 408 specimens
representing 23 genera and 50 species indicates the presence of the
Whiteavesi, Freboldi, Kunae, and Carlottense zones of the Pliensbachian and
the Kanense Zone of the lower Toarcian. The following five new species are
established (in alphabetical order): *Nodicoeloceras middlegatense* n.
sp., *Nodicoeloceras
nevadaense* n. sp., *Prodactylioceras westgatenses* n. sp.,
*Protogrammoceras* (*Matteiceras*) *tipperi* n. sp., and *Reynesocoeloceras
corvalani* n. sp. A volcanic ash bed within the basal New York Canyon type
V section yielded a 206-PB / 238-U Chemical Abrasion-Isotope
Dilution-Thermal Ionization Mass Spectrometry (CA-ID-TIMS) age of 188.98
+/- 0.11 Ma from the middle-upper part of the Whiteavesi Zone, which will
contribute to the refinement of the early Pliensbachian timescale, an
interval that is at present poorly constrained.

84 pp., 16 plates

ISBN 978-0-87710-522-0

Price: $40.00

*Jonathan R. Hendricks*
Director of Publications, Paleontological Research Institution
Adjunct Associate Professor, Dept. Earth & Atmospheric Sciences, Cornell
1259 Trumansburg Road, Ithaca, NY 14850
*Phone: (607) 273-6623 x20
*Email: jrh42 at
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