Aysén (Jurassic of Chile)

Where: Aisén, Chile (46.6° S, 72.4° W: paleocoordinates 44.8° S, 32.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Toqui Formation, Tithonian (152.1 - 145.0 Ma)

• U-Pb SHRIMP date of 147 ± 0.1 Ma from ignimbrite at base of measured section, just below fossiliferous layer

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; pebbly, volcaniclastic, green sandstone

• braided-river delta
• "green volcaniclastic pebbly sandstones and sandy sedimentary breccias"

•The succession of clastic sedimentary rocks with intercalated tuffs is 300–320 m thick. The dinosaur fossils occur in an approximately 100 m succession of alternating green volcaniclastic pebbly sandstones and sandy sedimentary breccias, with intercalations of lapilli tuffs and red ignimbrites with eroded tops The succession of clastic sedimentary rocks with intercalated tuffs is 300–320 m thick. The dinosaur fossils occur in an approximately 100 m succession of alternating green volcaniclastic pebbly sandstones and sandy sedimentary breccias, with intercalations of lapilli tuffs and red ignimbrites with eroded tops

Size class: macrofossils

Preservation: trace

Collection methods: surface (float), surface (in situ),

Primary reference: L. Salgado, R. de la Cruz, M. Suárez, M. S. Fernández, Z. B. Gasparini, S. Palma-Heldt, and M. Fanning. 2008. First Late Jurassic dinosaur bones from Chile. Journal of Vertebrate Paleontology 28(2):529-534 [M. Carrano/M. Carrano/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 83734: authorized by Matthew Carrano, entered by Matthew Carrano on 28.08.2008, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia -
Sauropoda indet.2 Marsh 1878 sauropod
SNGM-1977 (a mid or posterior dorsal vertebra), SNGM-1981 and SNGM-1982 (two mid? caudal centra) and SNGM-1980 (partial sternal plate)
 Saurischia - Diplodocidae
Diplodocidae indet.1 Marsh 1884 diplodocid
SNGM-1978, middle? cervical centrum
Diplodocinae indet.2 Janensch 1929 diplodocine
SNGM-1979, incomplete mid-posterior caudal vertebra
 Saurischia -
? Titanosauriformes indet.2 Salgado et al. 1997 sauropod
Chilesaurus diegosuarezi n. gen. n. sp.1 Novas et al. 2015 tetanuran
 Loricata -
Crocodyliformes indet.1 Hay 1930 crocodilian
"basal crocodyliforms"
Pinopsida
 Pinales - Podocarpaceae
Podocarpoxylon sp. Gothan 1905
 Ichnofossils -
Thalassinoides sp. Ehrenberg 1944
Skolithos sp. Haldemann 1840