Florida Mountains (1st piloceroid zone) (Ordovician of the United States)

Where: Luna County, New Mexico (32.1° N, 107.6° W: paleocoordinates 12.4° S, 91.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Victorio Formation (El Paso Group), Demingian (485.4 - 478.6 Ma)

• "same horizon" refers to the first piloceroid zone of the El Paso group (Flower, 1964 p. 93); "The first piloceroid zone is given the name Victorio formation [...] " (ibid. p. 148); In fig. 50 the 1st piloceroid zone of the Cook(e)s Range section corresponds to interval A of Cloud & Barnes (1946, Univ. Texas Publ. 4621) and to the upper part of the Gorman Fm. (= Hag Hills Fm. in Goldhammer et al., 1993, J. Sed. Petr. 63(3)) of the southern Franklin Mts., El Paso Co., TX., and is referred to the middle Canadian.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; shelly/skeletal lime mudstone

• "hard calicilutite layers with abundant small shells"

Size class: macrofossils

Preservation: cast

Primary reference: R. H. Flower. 1964. The Nautiloid Order Ellesmeroceratida (Cephalopoda). State Bureau of Mines and Mineral Resources New Mexico Institute of Mining and Technology, Memoir 12:234 p. [B. Kröger/T. Liebrecht/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88829: authorized by Björn Kröger, entered by Torsten Liebrecht on 22.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
? Muriceras obscurum
? Muriceras obscurum Flower 1964
specimen is most likely from the collection of R. H. Flower, now transferred to the Smithsonian Institution/U.S. National Museum; no catalogue number is given