Biohorizon in the Azygograptus lapworthi Biozone of the Los Colorados section (Ordovician of Argentina)

Also known as Los Colorados section

Where: Jujuy, Argentina (23.6° S, 65.7° W: paleocoordinates 42.2° S, 130.5° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Azygograptus lapworthi graptolite zone, Acoite Formation (Santa Victoria Group), Dapingian (470.0 - 467.3 Ma)

Environment/lithology: shallow subtidal; medium-grained, green, yellow sandstone

• To the top of the Acoite Formation, a more restricted inshore environment is represented by few monospecific assemblages of eurytopic forms like Azygograptus lapworthi preserved in yellowish–green medium-grained sandstones
• To the top of the Acoite Formation, a more restricted inshore environment is represented by few monospecific assemblages of eurytopic forms like Azygograptus lapworthi preserved in yellowish–green medium-grained sandstones

Size class: microfossils

Collection methods: quarrying,

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

Primary reference: B. A. Toro and N. C. Herrera Sánchez. 2019. Stratigraphical distribution of the Ordovician graptolite Azygograptus Nicholson & Lapworth in the Central Andean Basin (northwestern Argentina and southern Bolivia). Comptes Rendus Palevol 18:493-507 [E. Vlachos/N. Herrera Sánchez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 214522: authorized by Evangelos Vlachos, entered by Nexxys Herrera Sánchez on 05.10.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Dichograptidae
Azygograptus lapworthi
Azygograptus lapworthi Nicholson 1875 graptolite