Aysén (Jurassic of Chile)

Also known as Aysen; South of Lago General Carreras; General Carrera Lake

Where: Aisén, Chile (46.7° S, 72.4° W: paleocoordinates 44.9° 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

• group of beds-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

 Coniferales - Podocarpaceae
Podocarpoxylon sp. Gothan 1905 podocarp
Reptilia
 Saurischia -
Sauropoda indet.3 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.2 Marsh 1884 diplodocid
SNGM-1978, middle? cervical centrum
Diplodocinae indet.3 Janensch 1929 diplodocine
SNGM-1979, incomplete mid-posterior caudal vertebra
 Saurischia -
? Titanosauriformes indet.3 Salgado et al. 1997 sauropod
SNGM-1983, a distal end of a left femur; SNGM-1984, distal end of a right tibia
 Ornithischia -
Chilesaurus diegosuarezi n. gen. n. sp.2
Chilesaurus diegosuarezi n. gen. n. sp.2 Novas et al. 2015 ornithischian
SNGM 1935
 Loricata -
Burkesuchus mallingrandensis n. gen. n. sp.1 Novas et al. 2021 crocodilian
"basal crocodyliforms"
 Ichnofossils -
Skolithos sp. Haldemann 1840
Thalassinoides sp. Ehrenberg 1944