Estancia La Vega C, Rio Mayer Formation (Cretaceous of Argentina)

Where: Santa Cruz, Argentina (49.4° S, 71.7° W: paleocoordinates 56.4° S, 46.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Dipoloceras cristatum ammonoid zone, Rio Mayer Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• 13-14 m above base

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified shale and lithified, silty sandstone

• black to gray shales and massive silty sandstones

Size class: macrofossils

Primary reference: F. A. Medina and A. C. Riccardi. 2007. Tuberosciponoceras: a new dimorphic ammonoid genus from the Upper Albian of Patagonia, Argentina. Palaeontologische Zeitschrift 81(2):123-130 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 74299: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.08.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Baculitidae
Tuberosciponoceras insolitum
 Ammonitida - Labeceratidae
Myloceras sp., Labeceras sp.
Myloceras sp. Spath 1925 ammonite
Labeceras sp. Spath 1925 ammonite
 Ammonitida - Kossmaticeratidae
Eomarshallites espinosum, Eomarshallites hibridum
Eomarshallites espinosum Medina and Rinaldi 1986 ammonite
Eomarshallites hibridum Medina and Rinaldi 1986 ammonite
 Ammonitida - Desmoceratidae
Puzosia vegaensis
 Ammonitida - Mojsisovicsiidae
Dipoloceras elegans, Dipoloceras cristatum
Dipoloceras elegans van Hoepen 1931 ammonite
Dipoloceras cristatum Brongniart 1822 ammonite
 Ammonitida - Brancoceratidae
Hysteroceras leanzai