ammonites
Neseuretus tristani Shale/Los Rasos Sandstone Fm., Sierra Morena, Spain (Ordovician of Spain)

Where: Sierra Morena and Cuidad Real, Spain (39.0° N, 4.0° W: paleocoordinates 74.5° S, 83.6° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Neseuretus tristani Shale and Los Rasos Sandstone Formation, Dobrotivian (460.9 - 457.5 Ma)

• Listed from both formations: Neseuretus tristani Shale and Los Rasos Sandstone

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, ferruginous, shelly/skeletal, argillaceous, calcareous, cherty/siliceous shale and lithified sandstone

• Argillaceous, dark, fossiliferous shale with occasional nodular chert, limestone and iron interbedded with sandstones

Size classes: macrofossils, mesofossils

Primary reference: J. A. Vela Fernandez. 1992. Trilobites del Ordovicico de la zona centroiberica (sector entre los Montes de Toledo y Sierra Morena). Comunicats - Institut Catala de Mineralogia Gemmologia i Paleontologia 7:12-28 [A. Miller/P. Novack-Gottshall/P. Novack-Gottshall] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 21017: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 14.06.2002