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Hornitos, Cerro Algarrobito (Cretaceous to of Chile)

Where: Atacama, Chile (28.0° S, 70.3° W: paleocoordinates 30.6° S, 54.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Hornitos Formation, Campanian to Campanian (84.9 - 66.0 Ma)

• originally "lower third of the Upper Cretaceous"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; concretionary, calcareous limestone and sandstone

• described as "continental sediments" on the map legend
• "The rocks...correspond to sandstones, limestones, conglomerates, and caliches, intercalated with lavas and andesitic breccias and various volcanic rocks. Between these last is a conspicuous layer of rhyodactitic litic tuff, which could reach 10 m thickness...The bones appear in a marly limestone stratum 10 m thick with decimeter-sized calcareous concretions. The smallest pieces were found as rollings, whereas the larger piece was included in the limestone." (translation, M. Carrano)

Size class: macrofossils

Primary reference: G. Chong Diaz. 1985. Hallazgo de restos oseos de dinosaurios en la Formación Hornitos – Tercera Region de Atacama – Chile. IV Congreso Geologico Chileno 152-161 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35282: authorized by Matthew Carrano, entered by Matthew Carrano on 24.11.2003

Creative Commons license: CC BY (attribution)