Where: Tarrant County, Texas (32.8° N, 97.2° W: paleocoordinates 30.1° N, 59.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Main Street Limestone Formation (Washita Group), Late/Upper Albian (105.3 - 99.6 Ma)

• Upper Albian or lower Lower Cenomanian for Engonoceras; Mortoniceras (Subschloenbachia) rostratum is upper Albian.

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Reposited in the USNM

Primary reference: W. J. Kennedy, W. A. Cobban, J. M. Hancock and W. S. Gale. 2005. Upper Albian and Lower Cenomanian ammonites from the Main Street Limestone, Grayson Marl and Del Rio Clay in northeast Texas. Cretaceous Research 26:349-428 [L. Bulot/L. Bulot/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175112: authorized by Matthew Clapham, entered by Matthew Clapham on 02.12.2015

Creative Commons license: CC BY (attribution)