PBDB Collection

Palo Pintados Fm in southern Calchaqui Valley (Miocene of Argentina)

Also known as Estratos de San Lucas

Where: Salta, Argentina (25.8° S, 65.5° W: paleocoordinates 26.0° S, 63.5° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Palo Pintado Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• deposited between 10.29 ± 0.11 Ma (K/Ar) to 5.27 ± 0.28 Ma (206 P b/238U; Coutand et al., 2006; Carrapa et al., 2006; Galli et al., 2008, 2014).

• formation-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

• Megasequence III, or Araucanense is composed in the CalchaquõÂ Valley of a coarsening and thickening upward cycle, up to 3 km thick, which overlies the Angastaco Formation conglomerates in Megasequence II through a rapid transition zone. Lithology grades from lacustrine and ®ne-grained ¯uvial facies at its base (Palo Pintado Formation), to more proximal ¯uvial and conglomeratic alluvial facies at the top (lower part of the San Felipe Formation), mostly in grayish, yellowish, and greenish strata.

Size classes: macrofossils, mesofossils

Primary reference: D. Starck and L. M. Anzotegui. 2001. The late Miocene climatic change - persistence of a climatic signal through the orogenic stratigraphic record in northwestern Argentina. Journal of South American Earth Sciences 14:763-774 [P. Mannion/M. Kouvari]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 206042: authorized by Philip Mannion, entered by Miranta Kouvari on 29.10.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

• Palinomorphs were not included in the taxonomic list.

•

•The existence of an important fossil content in the Palo

•Pintado Formation and in the basal section of the San Felipe Formation was known for long time. Russo (1948) mentioned mammal remains belonging to Pleurolestodon avitus, undeterminable plants, and bivalves (Diplodon and Corbicula). Vilela (1954) described from the `Estratos de San Lucas' (equivalent to the Palo Pintado Formation) plant remains (logs and leaves) and the freshwater mollusca Ampularia, Corbicula stelzneri, and Diplodon.

Show authors, comments, and common names

unclassified
-	Ampularia sp., Angiospermata indet., Gliptodontidae indet. Ampularia sp. see also Vilela (1954) Angiospermata indet. see also Diaz et al. (1986) Gliptodontidae indet. genus close to Plyctaenopyga and Stromatophorus - Berman, pers. comm.
Reptilia
Testudines -	Testudines indet. Testudines indet. Batsch 1788 turtle see also Diaz et al. (1986)
Testudines - Chelidae	Chelidae indet. Chelidae indet. Gray 1825 sideneck turtle De la Fuente, pers. comm.
Crocodylia - Alligatoridae	Caiman sp. Caiman sp. Spix 1825 caiman De la Fuente, pers. comm.
Mammalia
Notoungulata - Toxodontidae	cf. Xotodon sp. cf. Xotodon sp. Ameghino 1887 notoungulate Berman, pers. comm.
- Mylodontidae	Pleurolestodon avitus Pleurolestodon avitus Rovereto 1914 edentate see also Russo (1948) (unpublished report)
Cingulata - Glyptodontidae	Plohophorus sp. Plohophorus sp. Ameghino 1887 glyptodon see also Diaz et al. (1986)
Cingulata - Pampatheriidae	Kraglievichia sp. Kraglievichia sp. Castellanos 1927 edentate see also Diaz et al. (1986)
-	"Diplodon sp." = Diplodonops "Diplodon sp." = Diplodonops Ameghino 1902 mammal see also Russo (1948) (unpublished report) and Vilela (1954)
Gastropoda
-	Gastropoda indet. Gastropoda indet. Cuvier 1795 snail see also Herbst et al. (1987)
Bivalvia
-	Bivalvia indet. Bivalvia indet. Linnaeus 1758 clam see also Herbst et al. (1987)
Cardiida - Corbiculidae	Corbicula sp., Corbicula stelzneri Corbicula sp. Megerle 1811 clam see also Russo (1948) (unpublished report) Corbicula stelzneri clam see also Vilela (1954)
Unionida - Mulleriidae	Anodontites sp. Anodontites sp. Bruguière 1792 clam see also Morton (1992)
Polypodiopsida
Salviniales - Polypodiidae	Salvinia sp. Salvinia sp. Adanson 1763 watermoss see also Herbst et al. (1987)
unclassified
-	Charophyta indet. Charophyta indet. Migula 1890 see also Herbst et al. (1987)