Ristna cliff (Ordovician of Estonia)

Also known as Locality K2; Cape of Ristinina; Ristno, W of Harju-Risti

Where: Harju, Estonia (59.3° N, 23.7° E: paleocoordinates 33.0° S, 2.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Kurtna Member (Kahula Formation), Keila (453.9 - 453.0 Ma)

• "Ristna Beds, Kurtna Member, Kahula Formation", in Rõõmusoks (2004)

Environment/lithology: open shallow subtidal; lithified, argillaceous limestone

• "North Estonian Confacies Belt at the northern flank of the Livonian Tongue" (Kröger & Isakar, 2006)
• informations on lithology are from Hints & Meidla (1997, in Raukas & Teedumäe [eds] 1997, Geology and Mineral Resources of Estonia, html version, http://sarv.gi.ee/geology)

Size class: macrofossils

Preservation: cast

Primary reference: B. Kröger and M. Isakar. 2006. Revision of annulated orthoceridan cephalopods of the Baltoscandic Ordovician. Fossil Record 9(1):137-163 [B. Kröger/B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87274: authorized by Björn Kröger, entered by Torsten Liebrecht on 13.03.2009, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Orthocerida - Orthoceratidae
Striatocycloceras undulostriatum
Strophomenata
 Strophomenida - Rafinesquinidae
Kurnamena laterorugata
Kurnamena laterorugata Roomusoks 1989