Where: Neuquen, Argentina (38.2° S, 70.1° W: paleocoordinates 37.7° S, 34.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hoplitocrioceras gentilii ammonoid zone, Lower Agrio Member (Agrio Formation), Early/Lower Hauterivian (136.4 - 130.0 Ma)

• From unit MH23 (0.5 m thick). From Hoplitocrioceras gentilii subzone, Lower Agrio Member, Agrio Formation, early Hauterivian. KEY TO BED NUMBERING: Stratigraphic heights not given on stratigraphic column in Figure 2, but were calculated based on the scale given in same figure. Base of section corresponds to 0 m.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified siltstone

Size class: macrofossils

Collection methods: quarrying,

• Material described in this paper are stored in the palaeontological collections of the University of Buenos Aires (CPBA), the Natural Sciences Museum of La Plata (MLP), and the Geological Survey, Buenos Aires (SGN).

Primary reference: M. B. Aguirre-Urreta and P. F. Rawson. 2001. Lower Cretaceous ammonites from the Neuquen Basin, Argentina: the Hauterivian neocomitid genus Hoplitocrioceras (Giovine, 1950). Cretaceous Research 22:201-218 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 50561: authorized by Austin Hendy, entered by Austin Hendy on 17.05.2005

Creative Commons license: CC BY (attribution)