10 km east-northeast of Cerro Barcino (Cretaceous to of Argentina)

Also known as Chubutisaurus type

Where: Chubut, Argentina (43.4° S, 68.3° W: paleocoordinates 45.5° S, 36.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Puesto La Paloma/Cerro Castaño Member (Cerro Barcino Formation), Late/Upper Aptian to Late/Upper Aptian (122.5 - 109.0 Ma)

• sometimes listed as Cerro Barcino member of Gorro Frigio Fm.

•Previously Bayo Overo Member. Krause et al. 2020 and Silva Nieto et al. 2017 consider the Bayo Overo member as an undifferentiated correlative of the Puesto La Paloma and Cerro Castaño members that crop out in the eastern localities of the Somuncurá-Cañadón-Asfalto basin, as in these eastern localities, the Puesto La Paloma, Cerro Castaño and Las Plumas members cannot be easily differentiated. Based on Krause et al. 2020 and Carballido et al. 2017. The contact zones between Puesto La Paloma and Cerros Castaño is approximately Aptian-Early Albian at ~118.5-110.8 Ma.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; intraclastic, gray, green siliciclastic sediments

• Rock with "cineritic" aspect, clear greenish-gray color, irregular fracture, small quartz clasts and isolated feldspathic splinters; greenish and/or reddish spots darker than the rock correspond to altered "fémicos".

Size classes: macrofossils, mesofossils

Collected by G. del Corro & O. A. Guitérrez in 1961, Feb 1965; reposited in the MACN

Collection methods: quarrying, mechanical,

• originally discovered by rancher Martínez in 1961

Primary reference: G. del Corro. 1966. Un nuevo Dinosaurio carnivoro del Chubut [A new carnivorous dinosaur from Chubut]. Communicaciones del Museuo Argentino de Ciencias Naturales "Bernardino Rivadavia" e Institutio Nacional de Investigacion de las Ciencias Naturales: Paleontologia 1(1):1-4 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 38533: authorized by Matthew Carrano, entered by Matthew Carrano on 23.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Theropoda - Carcharodontosauridae
Megalosaurus inexpectatus n. sp. del Corro 1966 allosauroid
MACN 18.172
 Saurischia -
Chubutisaurus insignis n. gen. n. sp.
Chubutisaurus insignis n. gen. n. sp. del Corro 1975 sauropod
MACN 18.222