San Fernando Quarry (Ordovician of Paraguay)

Where: Paraguay (25.4° S, 57.3° W: paleocoordinates 43.0° S, 142.8° W)

• outcrop-level geographic resolution

When: Normalograptus persculptus graptolite zone, Eusebio Ayala Formation, Hirnantian (445.2 - 443.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; micaceous, red sandstone and micaceous, red siltstone

• Vertical burrows referred to Skolithos by Godoy Ciguel et al. (1987) are very abundant suggesting lower intertidal-shallow subtidal depositional settings.
• reddish micaceous sandstone grading upward to fine-grained fossiliferous sandstone and siltstone..... The shell beds yielding the brachiopods described in this study are confined to the upper part of the Eusebio Ayala Formation where they are interbedded with iron-rich levels (Fig. 2).

Size classes: macrofossils, mesofossils

Collection methods: All specimens are housed in the Centro de Inves- tigaciones en Ciencias de la Tierra (CICTERRA), Consejo Nacional de Investigaciones Cientı ́ficas y Te ́cnicas, Univers- idad Nacional de Co ́rdoba (acronym CEGH-UNC).

Primary reference: J. L. Benedetto, K. Halpern, and J. C. Galeano Inchausti. 2013. High-latitude Hirnantian (latest Ordovician) brachiopods from the Eusebio Ayala Formation of Paraguay, ParanĂ¡ Basin. Palaeontology 56(1):61-78 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152547: authorized by Pete Wagner, entered by Pete Wagner on 25.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Leptostrophiidae
Eostropheodonta conradii Harrington 1950
Rhynchonellata
 Athyridida - Meristellidae
Hindella cf. crassa Sowerby 1839
 Rhynchonellida - Trigonirhynchiidae
? Plectothyrella itacurubiensis n. sp. Benedetto et al. 2013
 Orthida - Heterorthidae
Arenorthis paranaensis n. sp. Benedetto et al. 2013