Also known as Loc. 26
Where: Baja California Sur, Mexico (26.2° N, 112.3° W: paleocoordinates 25.3° N, 105.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Ysidro Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• The Ysidro Formation consists of dirty-white sandstone, underlying the Comondu Formation. The formation varies in lithology from place to place and apparently becomes more tuffaceous towards the gulf coast. The formation can be subdivided into two members, a lower shale member and an upper sandstone member. According to J. Smith this has lower Miocene affinities.
• bed-level stratigraphic resolution
Environment/lithology: coastal; white sandstone
Size class: macrofossils
Collection methods: quarrying,
• Collection studied and determined by J. Smith. No known repository.
Primary reference: C. H. Beal. 1948. Reconnaissance of the geology and oil possibilities of Baja California, Mexico. Geological Society of America Memoir 31 [A. Miller/A. Hendy/A. Hendy] more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 43811: authorized by Austin Hendy, entered by Austin Hendy on 26.08.2004
Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)