Möllbos 1. 3150 m west of Sjonhem Church. (Silurian of Sweden)

Also known as Oncocerid cephalopods of Halla Beds, unit b, at Mollbos 1

Where: Gotland, Sweden (57.5° N, 18.8° E: paleocoordinates 19.7° S, 2.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Halla Beds Formation, Homerian (430.5 - 427.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: bioturbated, argillaceous limestone and ooidal limestone

• Ref. 11073: "Halla Beds (15m): In the eastern part of Gotland a series of shallow marine sediments was deposited on a discontinuity plane. Pure oolites at the base are overlain by bioturbated argillaceous limestones with an abundant but impoverished marine fauna, indicating marginal marine to lagoonal conditions. These limestones grade into conglomeratic oncolites which are interrupted by evenly abraded hardgrounds..."

Primary reference: S. Stridsberg. 1985. Silurian oncocerid cephalopods from Gotland. Fossils and Strata (18)1-65 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13635: authorized by Michael Foote, entered by Michael Foote on 16.04.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Oncocerida - Trimeroceratidae
Polyplacophora
 Paleoloricata - Mattheviidae
Chelodes actinis n. sp.2 Cherns 1998 chiton
 Paleoloricata -
Heloplax papilla n. gen. n. sp.1, Enetoplax decora n. gen. n. sp.1, Arctoplax ornata n. gen. n. sp.1, Thairoplax pelta n. gen. n. sp.1, Alastega lira n. gen. n. sp.1, Plectrochiton tegulus n. gen. n. sp.1
Heloplax papilla n. gen. n. sp.1 Cherns 1998 chiton
Enetoplax decora n. gen. n. sp.1 Cherns 1998 chiton
Arctoplax ornata n. gen. n. sp.1 Cherns 1998 chiton
Thairoplax pelta n. gen. n. sp.1 Cherns 1998 chiton
Alastega lira n. gen. n. sp.1 Cherns 1998 chiton
Plectrochiton tegulus n. gen. n. sp.1 Cherns 1998 chiton