Gateway to the Paleobiology Database
Rancho Grande (USNM) (Cretaceous to of Honduras)

Where: Comayagua, Honduras (14.7° N, 87.5° W: paleocoordinates 14.7° N, 69.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Esquias Formation (Valle de Angelis Group), Late/Upper Albian to Late/Upper Albian (105.3 - 89.3 Ma)

• "lower red beds" of this group, formation name variable

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray, blue claystone and red sandstone

• "fluvial conditions mellowing from piedmont plain to floodplain, with localized lacustrone or lagoonal-marine embayments."
• "thin layer of blue-grey claystone interbedded in a succession of red siltstone and sandstone strata"

Size class: macrofossils

Collected by B. Simonson in 1971; reposited in the USNM

Collection methods: surface (in situ),

• collected by Bruce M. Simonson

Primary reference: G. S. Horne, M. G. Atwood, and A. P. King. 1974. Stratigraphy, sedimentology, and paleoenvironment of Esquias Formation of Honduras. The American Association of Petroleum Geologists Bulletin 58(2):176-188 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 51681: authorized by Matthew Carrano, entered by Matthew Carrano on 09.06.2005

Creative Commons license: CC BY (attribution)