Arequipa reefs, Peru: Sinemurian, Peru

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Axinellida - Cladocoropsidae
1 specimen
Anthozoa - Scleractinia - Actinastreidae
1 specimen
    = Actinastrea plana Duncan 1867
Stanley and Beauvais 1994
Anthozoa - Scleractinia - Stylophyllidae
2 specimens
    = Stylophyllopsis victoriae Duncan 1867
Stanley and Beauvais 1994
1 specimen
Stanley and Beauvais 1994
1 specimen
Stanley and Beauvais 1994
Lepidophyllia chocolatensis n. sp. Wells 1953
1 specimen
Stanley and Beauvais 1994
Anthozoa - Scleractinia - Thamnasteriidae
Thamnasteria sp. LeSauvage 1823
2 specimens
Anthozoa - Scleractinia - Montlivaltiidae
1 specimen
see common names

Geography
Country:Peru State/province:Arequipa region
Coordinates: 16.3° South, 71.7° West (view map)
Paleocoordinates:24.4° South, 23.4° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Jurassic Epoch: Early Jurassic
Stage: Sinemurian 10 m.y. bin: Jurassic 1
Key time interval: Sinemurian
Age range of interval: 199.5 - 192.9 m.y. ago
Stratigraphy
Formation:Chocolate
Stratigraphic resolution:group of beds
Stratigraphy comments: Sinemurian(?) age assigned by Stanley and Beauvais (1994).
Lithology and environment
Primary lithology:gray lithified "reef rocks"
Lithology description: gray to chocolate-colored limestone lens, more or less recrystallized to marble
Environment:reef, buildup or bioherm
Geology comments: lenses represent local patch reefs
Taphonomy
Modes of preservation:body,recrystallized
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:mechanical,survey of museum collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Reef 542
Database number:38079
Authorizer:W. Kiessling Enterer:B. Brenneis, W. Kiessling
Modifier:W. Kiessling Research group:marine invertebrate
Created:2004-04-10 01:23:26 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-04-10 01:23:26
Creative Commons license:CC0
Reference information

Primary reference:
10220. 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]

Secondary references:

6529 G. D. Stanley, Jr. and L. Beauvais. 1994. Corals from an Early Jurassic coral reef in British Columbia: refuge on an oceanic island reef. Lethaia 27:35-47 [W. Kiessling/W. Kiessling/S. Kolbe]