Also known as USGS 14039
Where: Tamaulipas, Mexico (26.1° N, 98.3° W: paleocoordinates 26.6° N, 95.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Oakville Sandstone Formation, Middle Miocene (16.0 - 11.6 Ma)
• A resistant scarp-making scanstone. Does not include a fauna sufficient diagnostic to establish the relative ages of the unit to the higher beds of the Guajalote Formation. Typically a very hard, calcareous sandstone. Has some faunal similarity with the Thomonde formation (lower Miocene) of Haiti. This would suggest an age as older if not older than the Guajalote Fm. The author appears to correlate this unit to the Oakville Sandstone of Texas and gives it a middle Miocene age however.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, calcareous sandstone
Size class: macrofossils
Reposited in the USNM
Collection methods: quarrying,
• Collections reposited in USGS and USNM collections.
Primary reference: J. Gardner. 1945. Mollusca of the Tertiary formations of Northeastern Mexico. Geological Society of American Memoir 11 [M. Kosnik/M. Kosnik/M. Kosnik] more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 43095: authorized by Austin Hendy, entered by Austin Hendy on 10.08.2004
Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)