Where: Chubut, Argentina (42.5° S, 70.0° W: paleocoordinates 45.0° S, 60.0° W)

• coordinate stated in text

When: Ypresian (56.0 - 47.8 Ma)

• Ar-Ar dates between 52.84 and 51.91 Ma in Wilf et al. (2005), assigned to magnetic chron C23n.2r, C23n.2n, and C23n.1r.

Environment/lithology: crater lake; lithified tuff

Size class: macrofossils

Preservation: adpression

Collected by J. Powell

• Repository: Paleontologia Invertebrados Lillo, Instituto Miguel Lillo

Primary reference: P. Fidalgo and D. R. Smith. 1987. A fossil Siricidae (Hymenoptera) from Argentina. Entomological News 98:63-66 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 151963: authorized by Matthew Clapham, entered by Matthew Clapham on 24.10.2013

Creative Commons license: CC BY (attribution)