Acoite Fm., Sierra de Cajas, Argentina (Ordovician of Argentina)

Where: Argentina (32.0° S, 66.0° W: paleocoordinates 36.3° S, 134.2° W)

• local area-level geographic resolution

When: Acoite Formation, Arenig (478.6 - 466.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, green, yellow shale and sandstone

• variously colored (clear yellow, green, whitish, purple, and reddish) shale and intercalations of sandstone and graywacke

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: F. G. Acenolaza. 1968. Geologia estratigrafica de la region de la Sierra de Cajas, Dpto. Humahuaco (Provincia de Jujuy). Revista de la Asociacion Geologica Argentina 23(3):207-222 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8869: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

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Gastropoda
 Bellerophontida - Bucaniidae
Bucania sp.
Bucania sp. Hall 1847 snail
Hyolitha
 Orthothecida - Orthothecidae
Orthotheca sp.
Orthotheca sp. Novak 1886
Lingulata
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
Rhynchonellata
 Orthida - Plectorthidae
Nanorthis sp.
Nanorthis sp. Ulrich and Cooper 1936
Trilobita
 Asaphida - Asaphidae
Ogygiocaris sp., Thysanopyge sp.
Ogygiocaris sp. Angelin 1854 trilobite
Thysanopyge sp. Kayser 1898 trilobite
Pterobranchia
 Graptoloidea - Sinograptidae
Acrograptus sp.
Acrograptus sp. graptolite
 Graptoloidea - Dichograptidae
Didymograptus sp., Dichograptus sp.
Didymograptus sp. McCoy 1851 graptolite
Dichograptus sp. graptolite
 Graptoloidea - Phyllograptidae
Tetragraptus sp.
Tetragraptus sp. Salter 1863 graptolite
 Graptoloidea - Kinnegraptidae
? Paradelograptus sp.
? Paradelograptus sp. Erdtmann et al. 1987 graptolite
 Dendroidea - Acanthograptidae
Dictyonema sp.
Dictyonema sp. Hall 1851 graptolite