Los Molles River section level MO 6 (Ordovician of Argentina)

Where: Argentina (28.7° S, 67.8° W: paleocoordinates 37.4° S, 130.6° W)

• coordinate estimated from map

When: 2 Member (Molles Formation), Arenigian (478.6 - 468.1 Ma)

• Approximately 40 m above base of the Los Molles River section.

Environment/lithology: coastal; lithified, volcaniclastic, green breccia and lithified, tuffaceous mudstone

• Green pyroclastic breccias and volcanic sandstones interbedded with tuffaceous fossiliferous mudstones and siltsones.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Benedetto

Primary reference: J. L. Benedetto. 2003. Early Ordovician (Arenig) brachiopods from volcanicalstic rocks of the Famatina Range, northwest Argentina. Journal of Paleontology 77(2):212-242 [A. Miller/S. Kolbe]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 115180: authorized by Arnold Miller, entered by Sarah Kolbe on 30.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Orthida - Hesperonomiidae
Mollesella planiventralis, Monorthis transversa
Monorthis transversa Benedetto 2003
 Orthida - Orthidae
Paralenorthis riojanus
Paralenorthis riojanus Levy and Nullo 1973
var. brevis is also observed
 Orthida - Productorthidae
Productorthis angulensis
Productorthis angulensis Benedetto 2003
Strophomenata
 Billingsellida - Polytoechiidae
Tritoechia mollesensis
Tritoechia mollesensis Benedetto 2003