Ratum (Oligocene of Netherlands)

Where: Winterswijik, Netherlands (52.0° N, 6.8° E: paleocoordinates 51.4° N, 3.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Ratum Member, Rupelian (33.9 - 28.1 Ma)

• member-level stratigraphic resolution

Environment/lithology: coastal; fine-grained, gray, argillaceous sandstone

• dark gray fine sand

Primary reference: M. van den Bosch, M. C. Cadee, and A. W. Janssen. 1975. Lithostratigraphical and biostratigraphical subdivision of Tertiary deposits (Oligocene-Pliocene) in the Winterswijk-Almelo region (eastern part of the Netherlands). Scripta Geologica 29:1-167 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 87248: authorized by Mark Uhen, entered by Mark Uhen on 12.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Lamnidae
Isurus flandricus, "Isurus gracilis" = Isurus leptodon, "Odontaspis cuspidata" = Lamna cuspidata, Lamna rupeliensis
"Isurus gracilis" = Isurus leptodon Agassiz 1843 mako shark
"Odontaspis cuspidata" = Lamna cuspidata Agassiz 1843 mackerel shark
Lamna rupeliensis Le Hon 1871 mackerel shark
 Lamniformes - Odontaspididae
Odontaspis acutissima Agassiz 1843 sand tiger shark
 Carchariniformes - Triakidae
Galeorhinus latus school shark