ammonites
Sierra Agua Verde, encrinite (Carboniferous of Mexico)

Where: Sonora, Mexico (29.4° N, 109.9° W: paleocoordinates 3.8° S, 43.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: La Joya Formation, Westphalian D (311.4 - 306.9 Ma)

• 100 m thick section, Late Atokan

•JA: entered as Atokan, but "early Late Moscovian" = Westphalian D is a more precise age call

• group of beds-level stratigraphic resolution

Environment/lithology: perireef or subreef; lithified grainstone and lithified packstone

• crinoidal grainstones and packstones which are intercalated with nodular cherts, calcareous siltstones and a Chaetetes reef mound (PBDB coll. 76169)

Size classes: macrofossils, mesofossils, microfossils

Collection methods: peel or thin section,

Primary reference: B. E. Buitron-Sanchez, C. Gomez-Espinosa, E. Almazan-Vazquez and D. Vachard. 2007. A Late Atokan regional encrinite (early Late Moscovian, Middle Pennsylvanian) in the Sierra Agua Verde, Sonora state, NW Mexico. in J. J. Alvaro, M. Aretz, F. Boulvain, A. Munnecke, D. Vachard, E. Vennin, eds., Palaeozoic reefs and bioaccumulations: climatic and evolutionary controls. Geological Society Special Publication 275:201-209 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 76170: authorized by Wolfgang Kiessling, entered by Uta Merkel on 15.11.2007