LACMIP 21536 - Upper Holz Shale Mbr, Ladd Fm (Cretaceous of the United States)

Where: Orange County, California (33.9° N, 117.6° W: paleocoordinates 39.6° N, 87.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Holz Member (Ladd Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Holz Shale Mbr of Ladd Fm. Lithostratigraphy not discussed here, but revised details can be found in Squires and Saul (2001). AGE: Campanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Not stated in text.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified shale

• ENVIRONMENT: No environmental reported. Presumably shallow-water siliciclastic marine.
• SPECIFIC LITHOLOGY: Shale. LITHIFICATION: Poorly-lithifid, based on figured specimens.

Size class: macrofossils

Reposited in the LACM

Collection methods: surface (in situ),

• COLLECTOR: Squires and Saul. REPOSITORY: LACM.

Primary reference: R. L. Squires and L. R. Saul. 2005. New Late Cretaceous (Santonian and Campanian) gastropods from California and Baja California, Mexico. The Nautilus 119(4):133-148 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69309: authorized by Austin Hendy, entered by Austin Hendy on 24.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, other taxa may be present. NOMENCLATURE: Authoritative publication, modern nomenclature, with species-level identifications.
Gastropoda
 Neotaenioglossa - Trichotropidae
Paxitropis dicriota Squires and Saul 2005 snail