Parcha Group, Quebrada del Toro, Argentina (Ordovician of Argentina)

Where: Argentina (25.0° S, 66.0° W)

• Paleocoordinates: 29.3° S, 169.3° W (Wright 2013)

• local area-level geographic resolution

When: Arenig (477.1 - 468.0 Ma)

• Parcha Group

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, green shale and sandstone

• thin, dark green shale with yellow-brown and violet-brown sandstone intercalations, occ. cone-in-cone concretions in marls

Collection methods: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete

Primary reference: H. J. Harrington. 1937. On some Ordovician fossils from Northern Argentina. Geological Magazine 74(3):97-124 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9009: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 14.09.2000

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Artiopoda
 Olenida - Olenidae
Triarthrus sp., Hypermecaspis sp.
Triarthrus sp. Green 1832 trilobite
Hypermecaspis sp. Harrington and Leanza 1957 trilobite
 Asaphida - Asaphidae
Ogygiocaris sp., "Megalaspis sp." = Megistaspis, Kayseraspis sp., Thysanopyge sp.
Ogygiocaris sp. Angelin 1854 trilobite
"Megalaspis sp." = Megistaspis Jaanusson 1956 trilobite
Kayseraspis sp. Harrington 1938 trilobite
Thysanopyge sp. Kayser 1898 trilobite
 Trinucleida - Alsataspididae
Araiopleura sp.
Araiopleura sp. Harrington and Leanza 1957 trilobite
 Trinucleida - Raphiophoridae
? Raphiophorus sp.
? Raphiophorus sp. Angelin 1854 trilobite
Pterobranchia
 Graptoloidea - Didymograptidae
"Didymograptus deflexus" = Baltograptus deflexus
"Didymograptus deflexus" = Baltograptus deflexus Elles and Wood 1901 graptolite