Agua de la Mula MHo24, Agrio Formation, Neuquén Basin, Neuquén (Cretaceous of Argentina)

Where: Argentina (38.1° S, 70.0° W: paleocoordinates 37.6° S, 33.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pilmatué Member (Agrio Formation), Early/Lower Hauterivian (136.4 - 130.0 Ma)

• upper part of the lower member (Pilmatué) of the Agrio Formation; Holcoptychites neuquensis zone, Holcoptychites agrioensis subzone

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified siltstone

• shoreface to offshore paleoenvironments on a storm-dominated, shallow marine ramp (PBDB coll. 50186)
• shelly siltstone, harder and red-weathering in lower part, softer above, (2.2 m)

Size class: macrofossils

Primary reference: M. B. Aguirre-Urreta and P. F. Rawson. 2003. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: the Hauterivian genus Holcoptychites. Cretaceous Research 24(5):589-613 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61647: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Holcodiscidae
Holcoptychites agrioensis Weaver 1931 ammonite
Bivalvia
 Arcida - Cucullaeidae
Cucullaea sp. Lamarck 1801 clam
 Pectinida - Entoliidae
Entolium sp. Meek 1865 scallop
 Trigoniida - Myophorelloidae
Steinmanella sp. Crickmay 1930 clam