Arequipa reefs, Peru (Jurassic of Peru)

Also known as Reef 542

Where: Arequipa region, Peru (16.3° S, 71.7° W: paleocoordinates 21.1° S, 36.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chocolate Formation, Sinemurian (199.3 - 190.8 Ma)

• Sinemurian(?) age assigned by Stanley and Beauvais (1994).

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, gray reef rocks

• lenses represent local patch reefs
• gray to chocolate-colored limestone lens, more or less recrystallized to marble

Size class: macrofossils

Preservation: recrystallized

Collection methods: mechanical,

Primary reference: J. W. Wells. 1953. Mesozoic Invertebrate Faunas of Peru Part 3. Lower Jurassic Corals from the Arequipa Region. American Museum Novitates (1631)1-14 [W. Kiessling/B. Brenneis/B. Brenneis]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38079: authorized by Wolfgang Kiessling, entered by Benjamin Brenneis on 10.04.2004, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

 Scleractinia - Thamnasteriidae
Thamnasteria sp. LeSauvage 1823 stony coral
 Scleractinia - Actinastreidae
Actinastrea plana Duncan 1867 stony coral
 Scleractinia - Montlivaltiidae
? Margarastraea jenski n. sp. stony coral
 Scleractinia - Stylophyllidae
Stylophyllopsis victoriae Duncan 1867 stony coral
Phacelostylophyllum chocolatensis Wells 1953 stony coral
 Axinellida - Cladocoropsidae
Cladocoropsis cf. mirabilis Felix 1907 demosponge