Fossils of Pentamerus gotlandicus Limestone at Lilla Karlso (Silurian of Sweden)

Where: Gotland, Sweden (57.6° N, 18.3° E: paleocoordinates 21.6° S, 3.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Pentamerus gotlandicus Limestone Formation, Sheinwoodian (433.4 - 430.5 Ma)

• Manten believes this unit to correlate with Slite IV beds on Gotland.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, blue limestone and gray, blue marl

• ...a clearly stratified marly limestone, generally with layers of 2-10 cm thickness, which sometimes, however, approach 20 or 30 cm. These limestone layers are separated by thin layers of a bluish grey, dense and soft marlstone, usually less than 2 cm thick. The limestone is light grey to bluish or brownish grey, normally finely crystalline but sometimes middle crystalline. The individual beds often show great variations in thickness over short distances, and can even completely thin out. Usually the rock is enormously rick in fossils, especially crinoids, bryozoans, and corals...No lamellibranchs were found... (Manten 1971, p. 237)

Primary reference: A. A. Manten. 1971. Silurian Reefs of Gotland. Developments in Sedimentology 13:1-539 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 13672: authorized by Michael Foote, entered by Michael Foote on 17.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Gastropoda
 Euomphalina - Platyceratidae
"Platyceras cornutum" = Platyostoma cornutum
"Platyceras cornutum" = Platyostoma cornutum Hisinger 1837 snail
Lingulata
 Lingulida - Discinidae
Orbiculoidea rugata
Rhynchonellata
 Pentamerida - Subrianidae
Conchidium sculptum
 Pentamerida - Pentameridae
Pentamerus gotlandicus
 Pentamerida - Clorindidae
Antirhynchonella linguifera
 Atrypida - Atrypidae
Atrypa reticularis, Plectatrypa imbricata
Atrypa reticularis Linnaeus 1758
Plectatrypa imbricata Sowerby and Murchison 1839
 Orthida - Hesperorthidae
Ptychopleurella bouchardi
 Orthida - Dicoelosiidae
Dicoelosia biloba
Dicoelosia biloba Linnaeus 1758
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis
Leptaena rhomboidalis Wahlenberg 1818
 Strophomenida - Sowerbyellidae
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
 Cystiphyllida - Cystiphyllidae
Cystiphyllum cylindricum
 Stauriida - Acervulariidae
Acervularia ananas
 Rugosa - Chonophyllidae
Ketophyllum spp.
Ketophyllum spp. Wedekind 1927 horn coral
 Heliolitida - Heliolitidae
Heliolites interstinctus
 Heliolitida - Halysitidae
Halysites catenularis
Halysites catenularis tabulate coral
 Favositida - Favositidae
Favosites gothlandicus
Favosites gothlandicus Lamarck 1816 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp.
Syringopora sp. Goldfuss 1826 tabulate coral
Stromatoporoidea
 Stromatoporoidea -
Stromatoporoidea indet.
Stromatoporoidea indet. stromatoporoid sponge