Biohorizon in the Didymograptellus bifidus Biozone of the Santa Rosa section (Ordovician of Argentina)

Also known as Santa Rosa section

Where: Jujuy, Argentina (22.7° S, 65.9° W: paleocoordinates 44.6° S, 128.5° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Didymograptellus bifidus graptolite zone, Cochinoca-Escaya Magmatic Sedimentary Complex Formation, Early/Lower Ordovician (485.4 - 470.0 Ma)

Environment/lithology: marine; muddy, sandy siliciclastic sediments

• 20 m thick alternating deposits of sandstones and pelites affected by synsedimentary intrusive bodies

Size class: microfossils

Collection methods: quarrying,

• The studied material is housed in the paleontological collection of the Centro de Investigaciones en Ciencias de la Tierra (CICTERRA), CONICET and Universidad Nacional de Córdoba, Argentina, under the prefix CEGH-UNC.

Primary reference: G. A. Lo Valvo, N. C. Herrera Sánchez, and B. A. Toro. 2020. Early-Middle Ordovician graptolites from the Argentine Puna: quantitative paleobiogeographic analysis based on a systematic revision. Ameghiniana 57(6):534-554 [E. Vlachos/N. Herrera Sánchez/N. Herrera Sánchez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 220274: authorized by Evangelos Vlachos, entered by Nexxys Herrera Sánchez on 13.05.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

 Graptoloidea - Didymograptidae
Baltograptus deflexus Elles and Wood 1901 graptolite
Baltograptus extremus Maletz and Slovacek 2013 graptolite
 Graptoloidea - Sigmagraptidae
Sigmagraptus praecursor Ruedemann 1904 graptolite
"Tetragraptus serra" = Fucoides serra
"Tetragraptus serra" = Fucoides serra Brongniart 1828