NMMNH locality 9575, San Ysidro (Cretaceous of the United States)

Where: Sandoval County, New Mexico (35.6° N, 106.8° W: paleocoordinates 36.0° N, 70.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Acanthoceras amphibolum ammonoid zone, Paguate Member (Dakota Formation), Middle Cenomanian (99.6 - 93.5 Ma)

• About 2.5 m below the local top of the Paguate Member

• bed-level stratigraphic resolution

Environment/lithology: shoreface; lithified, fine-grained, medium, nodular sandstone

• Fine- to medium-grained quartz sandstone that is ripple laminated or wavy bedded, with limestone septarian nodule horizon

Size class: macrofossils

Reposited in the NMMNH

Primary reference: P. L. Sealey and S. G. Lucas. 2017. First record of the Cenomanian (Cretaceous) ammonite Pachydesmoceras maroccanum from North America. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 283:77-84 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184216: authorized by Matthew Clapham, entered by Matthew Clapham on 08.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Desmoceratidae
Pachydesmoceras maroccanum Collignon 1966 ammonite