Martin Ridge section, 100-105m (Ordovician of the United States)

Where: Nevada (39.2° N, 116.4° W: paleocoordinates 6.7° S, 75.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dicellograptus ornatus zone, Katian (453.0 - 445.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; lime mudstone and calcareous mudstone

• Graptolites are not common in the lower part of the Martin Ridge Section, but are abundant, diverse, and well preserved in the interval between 95 and 110 m
• interbeded lime mudstone and calcareous mudstone

Size classes: mesofossils, microfossils

Primary reference: P. Storch, C. E. Mitchell, S. C. Finney and M. J. Melchin. 2011. Uppermost Ordovician (upper Katian-Hirnantian) graptolites of north-central Nevada, USA. Bulletin of Geosciences 86(2):301-386 [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 145803: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 11.06.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Pterobranchia
 Graptoloidea - Diplograptidae
Paraorthograptus pacificus Ruedemann 1947 graptolite
Parareteograptus sinensis Mu 1974 graptolite
Rectograptus abbreviatus Elles and Wood 1907 graptolite
 Graptoloidea - Lasiograptidae
 Graptoloidea - Climacograptidae
Appendispinograptus supernus Elles and Wood 1906 climacograptid
Appendispinograptus longispinus Hall 1902 climacograptid
Climacograptus hastatus Hall 1902 climacograptid
 Graptoloidea - Dicranograptidae
Pleurograptus lui Mu 1950 graptolite
Dicellograptus ornatus Elles and Wood 1904 graptolite