Sierra del Alamo, Package 1 (Triassic to of Mexico)

Also known as Reef

Where: Sonora, Mexico (30.7° N, 112.6° W: paleocoordinates 13.2° N, 54.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Antimonio Formation, Alaunian to Alaunian (215.6 - 205.6 Ma)

• Based on ammonites

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks and lithified, argillaceous, silty mudstone

• Thin biostromal limestones interbedded with argillite, mudstone and siltstone

Size class: macrofossils

Preservation: replaced with calcite

Collection methods: quarrying, peel or thin section,

• Only corals described in detail

Primary reference: G. D. Stanley, Jr. and C. M. Gonzalez-Leon. 1997. New Late Triassic scleractinian corals from the Antimonio Formation, northwestern Sonora, Mexico. Revista Mexicana de Ciencias Geologicas 14:202-207 [W. Kiessling/W. Kiessling/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34983: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 23.10.2003, edited by Sabine N├╝rnberg

Creative Commons license: CC BY (attribution)

Taxonomic list

 Pectinida - Propeamussiidae
 Ostreida - Ostreidae
? Lopha cordillerana n. sp. oyster
 Ostreida - Bakevelliidae
Gervillaria sp. Cox 1951 oyster
 Cardiida - Palaeocarditidae
 Trigoniida - Trigoniidae
Myophorigonia jaworskii Steinmann 1929 clam
 Scleractinia - Stylophyllidae
"Meandrostylis antimoniensis" = Maeandrostylis
"Meandrostylis antimoniensis" = Maeandrostylis stony coral