Algarrobo (lower Quiriquina Formation) (Cretaceous of Chile)

Where: Valparaíso, Chile (33.4° S, 71.7° W: paleocoordinates 35.5° S, 59.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Quiriquina Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• From the lower part of the Quiriquina Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; conglomeratic sandstone

• a series of fine sandstone and conglomerates of pebbles, cobbles and boulders which rest unconformably on granitic rocks

Size class: macrofossils

• two 'rostrum' fragments (e.g., premaxillae) and a predentary

Collected by Mario E. Suarez; reposited in the SGOPV

• The Algarrobo locality was discovered in 1866 by Landbeck, who made the first collection of fossil material from this site for the Museo Nacional de Historia Natural of Chile in Santiago.

Primary reference: P. M. Brito and M. E. Suarez. 2003. Late Cretaceous Belonostomus (Pisces, Actinopterygii, Aspidorhynchidae) from Algarrobo, Chile, with comments on aspidorhynchid paleodistribution in South America. Revista Geológica de Chile 30(1):117-127 [G. Lloyd/G. Lloyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 124311: authorized by Graeme Lloyd, entered by Graeme Lloyd on 11.02.2012, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Aulopiformes - Enchodontidae
Enchodus sp.1 Agassiz 1835
 Crossognathiformes - Pachyrhizodontidae
Pachyrhizodus sp.1 Agassiz 1850
 Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris Lambe 1902
SGO-PV 788, SGO PV 789, SGO PV 790
 Pachycormiformes - Pachycormidae
Pachycormidae indet.1 Woodward 1895
Chondrichthyes
 Synechodontiformes - Paraorthacodontidae
Paraorthacodus sp.2 Glikman 1957 elasmobranch
 Squaliformes - Squalidae
Centrophoroides sp.2 Davis 1887 dogfish shark
 Lamniformes - Carchariidae
Carcharias sp.2 Rafinesque 1810 sand shark
 Rajiformes - Sclerorhynchidae
Biropristis landbecki n. gen. n. sp.2 Suárez and Cappetta 2004 ray
Ischyrhiza chilensis2 Wetzel 1930 ray
 Chimaeriformes - Edaphodontidae
Edaphodon sp.2 Buckland 1838 chimaera
Cephalopoda
 Ammonitida - Kossmaticeratidae
Grossouvrites sp.2 Kilian and Reboul 1909 ammonite
Bivalvia
 Cardiida - Cardiidae