Kattenhammarsvik, Shore exposure immediately southeast of pier (Silurian of Sweden)

Also known as Katthammarsvik

Where: Gotland, Sweden (57.4° N, 18.8° E: paleocoordinates 18.4° S, 2.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lobograptus scanicus graptolite zone, Unit C Member (Hemse Formation), Gorstian (427.4 - 425.6 Ma)

• Lower Hemse Marl

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, shelly/skeletal limestone and lithified marl

• "The Hemse beds are a unit of biohermal limestone, bedded limestone, and marlstone about 100 m thick...At two areas [at Ljugarn] the rocks consist of in-place, coalescing stromatoporoid colonies, forming parallel, irregular layers which dip gently eastward. more extensive, surrounding outcrops contain more non-bedded stromatoporoid debris than in-place colonies. In addition to stromatoporoids, the debris deposits include algae, corals, crinoids, bryozoa, brachiopods, mollucs, trilobites, and ostracodes...[Compositional analysis of limestone given in some detail]."

Size class: macrofossils

Collection methods: This is one of several individual bed collections within 20 meters of one another.

Primary reference: J. B. Knight. 1941. Paleozoic gastropod genotypes. Geological Society of America Special Paper 32:1-510 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 184502: authorized by Pete Wagner, entered by Pete Wagner on 08.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• Does not include stromatoporoids, corals, crinoids, algae and microfossils.
 Euomphalina - Euomphalidae
"Pleurotomaria planorbis n. sp." = Centrifugus planorbis
"Pleurotomaria planorbis n. sp." = Centrifugus planorbis Bronn 1835 snail
 Euomphalina - Elasmonematidae
"Trochus mollis" = Discordichilus mollis
"Trochus mollis" = Discordichilus mollis Lindström 1884 snail
 Murchisoniina - Luciellidae
"Pleurotomaria limata" = Prosolarium limata
"Pleurotomaria limata" = Prosolarium limata Lindström 1884 snail