Mõnuste (Kirna), Saunja Fm. (Ordovician of Estonia)

Also known as Locality N3, Monuste

Where: Harju, Estonia (59.1° N, 24.5° E: paleocoordinates 29.9° S, 1.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Saunja Formation, Nabala (452.0 - 449.5 Ma)

• The quarry at Mõnuste comprises the type section of the Saunja Formation (see caption of fig. 53 in Raukas & Teedumäe [eds.] 1997, Geology and Mineral Resources of Estonia, html version, http://sarv.gi.ee/geology);

•The Nabala Regional Stage is formerly known as the lower part of the "Lyckholm'sche Schicht" (Raukas & Teedumäe [eds.] 1997)

Environment/lithology: open shallow subtidal; lithified lime mudstone

• "North Estonian Confacies Belt at the northern flank of the Livonian Tongue" (Kröger & Isakar, 2006)
• The Saunja Fm. comprises "up-to-28-m-thick micritic limestones" being "lithologically uniform and occur all over Estonia" (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 87298: authorized by Björn Kröger, entered by Torsten Liebrecht on 14.03.2009, edited by Pete Wagner and Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

• Koken's snail data reflects "Kirna" from this interval (PJW).
Strophomenata
 Strophomenida - Rafinesquinidae
Harjumena schmidti5 Gagel and Holtedahl 1916
Bekkeromena ilmari5 Rõõmusoks 2004
Gastropoda
 Trochonematoidea - Lophospiridae
"Worthenia aista" = Ruedemannia lirata4, "Worthenia turbinoides" = Loxoplocus sedgwicki4, "Ectomaria kirnaensis n. sp." = Ectomaria nieszkowskii2
"Worthenia aista" = Ruedemannia lirata4 Ulrich and Scofield 1897 snail
"Worthenia turbinoides" = Loxoplocus sedgwicki4 Donald 1906 snail
"Ectomaria kirnaensis n. sp." = Ectomaria nieszkowskii2 Schmidt 1858 snail
 Euomphalina - Helicotomidae
"Palaeomphalus gradata" = Palaeomphalus obtusangulus4
"Palaeomphalus gradata" = Palaeomphalus obtusangulus4 Angelin and Lindström 1880 snail
 Euomphalina - Macluritidae
"Maclurea neritoides" = Maclurites neritoides1
"Maclurea neritoides" = Maclurites neritoides1 d'Eichwald 1860 snail
 Euomphalina - Platyceratidae
"Eunema rupestre" = Cyclonema rupestre4
"Eunema rupestre" = Cyclonema rupestre4 d'Eichwald 1856 snail
 Murchisoniina - Phanerotrematidae
Brachytomaria nodulosa n. sp.3 Koken 1896 snail
 Murchisoniina - Eotomariidae
"Raphistoma numismale" = Liospira numismale4, "Eotomaria chamaeconus" = Pseudocryptaulina chamaeconus3
"Raphistoma numismale" = Liospira numismale4 Koken 1896 snail
"Eotomaria chamaeconus" = Pseudocryptaulina chamaeconus3 Koken 1896 snail
 Murchisoniina - Gosseletinidae
Latitaenia kirnaensis4 Koken and Perner 1925 snail
 Murchisoniina - Hormotomidae
"Murchisonia insignis" = Hormotoma insignis4
"Murchisonia insignis" = Hormotoma insignis4 d'Eichwald 1860 snail
 Murchisoniina - Subulitidae
Subulites subula4, "Subulites (Fusispira) ovalis" = Fusispira ovalis4
Subulites subula4 Koken 1896 snail
"Subulites (Fusispira) ovalis" = Fusispira ovalis4 Koken 1897 snail
Cephalopoda
 Orthocerida - Dawsonoceratidae
Dawsonoceras sp. Hyatt 1884
 Orthocerida - Orthoceratidae