Ireviken 1, Gotland, Lower Visby Beds bioherm (Silurian of Sweden)

Also known as Reef 3670

Where: Sweden (57.9° N, 18.6° E: paleocoordinates 23.8° S, 3.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lower Visby Formation, Telychian (438.5 - 433.4 Ma)

• bed-level stratigraphic resolution

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

• formed at depth of 100 m
• coral-stromatoporoid bioherm with a low profile, interbedded in green mudstones and nodular limestones

Size class: macrofossils

Primary reference: E. W. Nield. 1982. The earliest Gotland reefs: two bioherms from the Lower Visby Beds (Upper Llandovery). Palaeogeography, Palaeoclimatology, Palaeoecology 39:149-164 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 77409: authorized by Wolfgang Kiessling, entered by Uta Merkel on 11.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Heliolitida - Halysitidae
Halysitidae indet., Catenipora sp.
Halysitidae indet. Milne-Edwards and Haime 1849 tabulate coral
Catenipora sp. Lamarck 1816 tabulate coral
 Heliolitida - Heliolitidae
Heliolitidae indet.
Heliolitidae indet. Lindström 1876 tabulate coral
 Favositida - Favositidae
Favositidae indet.
Favositidae indet. Dana 1846 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp.
Syringopora sp. Goldfuss 1826 tabulate coral
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
 Rugosa - Chonophyllidae
Omphyma sp.
Omphyma sp. Rafinesque and Clifford 1820 horn coral
 Stauriida - Ketophyllidae
Ketophyllidae indet.
Ketophyllidae indet. Lecompte 1952 horn coral
 Cystiphyllida - Goniophyllidae
Goniophyllidae indet.
Goniophyllidae indet. Dybowski 1873 horn coral
 Cystiphyllida - Palaeocyclidae
Palaeocyclus sp.
Palaeocyclus sp. Milne-Edwards and Haime 1849 horn coral
Stromatoporoidea
 Stromatoporoidea -
Stromatoporoidea indet.
Stromatoporoidea indet. stromatoporoid sponge
Lingulata
 Lingulida -
Lingulida indet.
Lingulida indet. Waagen 1885
Stenolaemata
 Cystoporata - Fistuliporidae
Fistulipora pusilla
 Cystoporata - Ceramoporidae
Ceramopora armata, Ceramoporella lindstromi, Crepipora lunariata
 Cryptostomata - Arthrostylidae
Nematopora visbyensis, Glauconomella disticha, Helopora lindstromi
Glauconomella disticha Goldfuss 1831
 Cryptostomata - Ptilodictyidae
Ptilodictya lanceolata, Phaenopora lindstromi
Ptilodictya lanceolata Goldfuss 1829
 Cryptostomata - Septoporidae
Thamniscus tornquisti
 Cryptostomata - Fenestellidae
Fenestella subantiqua, Archaeofenestella rigidula
 Rhabdomesida - Rhomboporidae
Saffordotaxis gotlandica
 Trepostomida - Monticuliporidae
Mesotrypa suprasilurica
 Trepostomida - Atactotoechidae
Cyphotrypa cf. maculata
 Trepostomata - Halloporidae
Hallopora cf. bassleri, Hallopora elegantula
 Trepostomata - Heterotrypidae
Asperopora multiporum