Galiote reef, SW Point, Anticosti Isl., Canada (Silurian of Canada)

Also known as Reef 1415

Where: Quebec, Canada (49.4° N, 63.6° W: paleocoordinates 22.6° S, 34.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chicotte Formation, Telychian (438.5 - 433.4 Ma)

• member-level stratigraphic resolution

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

• 5 m thick and 70 m wide ovoid reef. Lower reef core with rudaceous crinoidal wackestones with Stromatactis. Middle reef core with abundant tabulate corals in a crinoidal wackestone matrix.

Size class: macrofossils

Collection methods: mechanical, peel or thin section,

• Data mostly from middle reef core

Primary reference: F. R. Brunton and P. Copper. 1994. Paleoecologic, temporal, and spatial analysis of Early Silurian reefs of the Chicotte Formation, Anticosti Island, Quebec, Canada. Facies 31:57-80 [W. Kiessling/W. Kiessling/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25250: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 05.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Hormogoneae
 Oscillatoriales - Girvanellaceae
Girvanella sp. Nicholson and Etheridge 1878
Anthozoa
 Stauriida - Arachnophyllidae
Arachnophyllum sp. Dana 1846 horn coral
 Stauriida - Ptychophyllidae
Ptychophyllum sp. Milne-Edwards and Haime 1850 horn coral
 Stauriida - Streptelasmatidae
Dinophyllum sp. Lindström 1882 horn coral
 Favositida - Favositidae
Favosites gothlandicus Lamarck 1816 tabulate coral
Favosites favosus Goldfuss 1826 tabulate coral
 Favositida - Coenitidae
Coenites sp. Eichwald 1829 tabulate coral
 Favositida - Alveolitidae
Subalveolites sp. Sokolov 1955 tabulate coral
End reef builders
Alveolites sp. Lamarck 1801 tabulate coral
platy
Stromatoporoidea
 Clathrodictyida - Actinodictyidae
Ecclimadictyon sp. Nestor 1964 stromatoporoid sponge
 Clathrodictyida - Gerronostromatidae
Petridiostroma sp. Stearn 1992 stromatoporoid sponge
 Clathrodictyida - Clathrodictyidae
Clathrodictyon sp. Nicholson and Murie 1878 stromatoporoid sponge
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema varians Billings 1857 snail
Cephalopoda
 Dissidocerida - Geisonoceratidae
Protokionoceras sp. Grabau and Shimer 1910
Stenolaemata
 Cryptostomata - Ptilodictyidae
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus sp. Foerste 1909
 Spiriferida - Cyrtiidae
Eospirifer radiatus Sowerby 1834
 Atrypida - Atrypidae
Trilobita
 Corynexochida - Illaenidae
Stenopareia sp. Holm 1886 trilobite
Crinoidea
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp. Goldfuss 1831 Sea lily