Where: Tasmania, Australia (42.6° S, 146.4° E: paleocoordinates 5.9° N, 178.4° E)

• coordinate stated in text

• local area-level geographic resolution

When: Westfield Sandstone Formation, Hirnantian (445.2 - 443.4 Ma)

• Not all localities can be placed precisely stratigraphically. F8 and F5 are uncertain. Most of the material comes from locality CB18/F2/L11. This is regarded, on basis of graptolites, as correlating with persculptus Zone (which would make it Hirnantian) or low in acuminatus Zone (which would make it Rhuddanian). Banks judges that the O/S boundary is "probably just below" this horizon.

•

•Edit by M. Foote on 2021-05-21: Presence of Metabolograptus persculptus and cf. Guandacolithus sp. suggests probable Hirnantian age (Diego Balseiro, personal communication).

• member-level stratigraphic resolution

Environment/lithology: marine; sandstone and siltstone

Size classes: macrofossils, mesofossils

Primary reference: M. R. Banks. 1988. The base of the Silurian System in Tasmania. Bulletin of the British Museum (Natural History) (Geology Series) 43:191-194 [M. Foote/M. Foote/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26240: authorized by Michael Foote, entered by Michael Foote on 08.10.2002

Creative Commons license: CC BY (attribution)