Oandu Stage, North Estonia, Rookula core - Patzkowsky (Ordovician of Estonia)

Where: Rookula, Estonia (59.0° N, 26.0° E: paleocoordinates 31.8° S, 0.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hirmuse Formation, Oandu (457.5 - 452.0 Ma)

Environment/lithology: shallow subtidal; argillaceous marl and carbonaceous claystone

• Argillaceous marls and carbonate clays intercalating with more or less argillaceous limestones. Occurrence of thin laminated marls and limestones with some fine sand on different stratigraphical levels.

Collection methods: core,

Primary reference: L. Hints. 1998. Oandu stage (Caradoc) in central North Estonia. Proceedings of the Estonian Academy of Science 47(3):158-172 [M. Patzkowsky/Z. Krug/Z. Krug]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 37773: authorized by Mark Patzkowsky, entered by Zack Krug on 23.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Phacopida - Pterygometopidae
Toxochasmops sp. McNamara 1979 trilobite
Paracrinoidea
 Comarocystitida -
Strophomenata
 Billingsellida - Clitambonitidae
Vellamo sp. Opik 1930
Ilmarinia sp. Opik 1934
 Strophomenida - Sowerbyellidae
Sowerbyella tenera Rõõmusoks 1959
 Strophomenida - Rafinesquinidae
"Leptaena" sp. Dalman 1828
Kjaerina sp. Bancroft 1929
Kjaerina poljensis Alichova 1951
Rhynchonellata
 Pentamerida - Porambonitidae
Porambonites sp. Pander 1830
 Pentamerida - Camerellidae
Camerella sp. Billings 1859
 Atrypida - Anazygidae
Zygospira sp. Hall 1862
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema cf. parva Oraspold 1956
 Orthida - Draboviidae
 Orthida - Dalmanellidae
 Orthida - Platystrophiidae
Craniata
 Craniopsida - Craniopsidae