Fossils of Lerberget Marlstone at Stora Karlso (Silurian of Sweden)

Where: Gotland, Sweden (57.6° N, 18.3° E)

• Paleocoordinates: 8.7° S, 49.6° W (Wright 2013)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Lerberget Marlstone Formation, Sheinwoodian (433.4 - 430.5 Ma)

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray marl

• Bluish grey to brownish gray, sometimes greenish coloured marlstone, which is dense, rather soft, and generally very thinly foliating. The marlstone layers alternate with thin layers or lenses of marly limestone, which is harder, finely crystalline and of a light-grey colour. (Manten 1971, p.229)

Size classes: macrofossils, mesofossils

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 13669: authorized by Michael Foote, entered by Michael Foote on 17.04.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

unclassified
  -
Trilobita
 Phacopida - Cheiruridae
Sphaerexochus scabridus Angelin 1854 trilobite
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Ostracoda
 Palaeocopida - Craspedobolbinidae
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
"Orthoceras" sp.
Gastropoda
 Euomphalina - Oriostomatidae
"Poleumita globosum" = Oriostoma globosum, "Poleumita sculptum" = Oriostoma globosum sculptum
"Poleumita globosum" = Oriostoma globosum von Schlotheim 1820 snail
"Poleumita sculptum" = Oriostoma globosum sculptum de Sowerby and Murchison 1839 snail
 Euomphalina - Platyceratidae
"Platyceras cornutum" = Platyostoma cornutum
"Platyceras cornutum" = Platyostoma cornutum Hisinger 1837 snail
 Euomphalina - Euomphalidae
Euomphalopterus alatus Wahlenberg 1821 snail
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis Wahlenberg 1818
 Strophomenida - Amphistrophiidae
"Amphistrophia funiculata" = Amphistrophiella funiculata
"Amphistrophia funiculata" = Amphistrophiella funiculata M'Coy 1846
 Strophomenida - Sowerbyellidae
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
"Camarotoechia borealis" = Stegerhynchus borealis
"Camarotoechia borealis" = Stegerhynchus borealis Buch 1834
 Orthida - Dicoelosiidae
Dicoelosia biloba Linnaeus 1758
 Orthida - Dalmanellidae
 Orthida - Hesperorthidae
 Spiriferida - Delthyrididae
Howellella elegans Muir-Wood 1925
 Spiriferida - Cyrtiidae
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818
 Athyridida - Nucleospiridae
Nucleospira pisum Sowerby 1839
[entered as Nucleospsira pisum]
 Athyridida - Meristellidae
Meristina obtusa Dalman 1828
 Pentamerida - Clorindidae
 Pentamerida - Parastrophinidae
Anastrophia deflexa Sowerby 1839
 Protorthida - Skenidiidae
 Atrypida - Atrypidae
Plectatrypa imbricata Sowerby and Murchison 1839
Atrypa reticularis Linnaeus 1758
 Atrypida - Lissatrypidae
"Glassia obovata" = Lissatrypa obovata
"Glassia obovata" = Lissatrypa obovata Sowerby 1839
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Stromatoporoidea
 Stromatoporoidea -
Stromatoporoidea indet. stromatoporoid sponge
 Clathrodictyida - Clathrodictyidae
Clathrodictyon striatellum stromatoporoid sponge
Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
 Auloporida - Auloporidae
Aulopora sp. Goldfuss 1829 tabulate coral
 Favositida - Favositidae
Favosites gothlandicus Lamarck 1816 tabulate coral
 Heliolitida - Plasmoporidae
Plasmopora scita tabulate coral
 Heliolitida - Heliolitidae
Heliolites spp. Dana 1846 tabulate coral
 Heliolitida - Halysitidae
Halysites catenularis tabulate coral
 Rugosa - Chonophyllidae
Ketophyllum spp. Wedekind 1927 horn coral
 Cystiphyllida - Cystiphyllidae