Revealed are some characteristics of the enormous number of bones of the glacial age fauna dredged from the North Sea bottom by dutch fishermen. Examined were one hundred uncleaned molars of Elephas primigennius from the zone of the megaripples in the southern North Sea. Attention was paid to the occurence of a clear and sharp demarcation line between an ungrown part and a part covered by encrusting organisms such as bryozoans, serpulids and others on about 60 pieces of the investigated molars. This 'encrusting line', as well as the qualitative properties of the crust itself, prove that there was no displacement of sand on the location where the molars were dredged during a number of successieve years. Supposed is, that the grinding off, noticed on 3 to 4 of the molars, is caused by fluvial transportation during the Kreftenheye formation.

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Grondboor & Hamer

CC BY 3.0 NL ("Naamsvermelding")

Nederlandse Geologische Vereniging

J. Mulder. (1973). Enkele kanttekeningen bij de bottenvondsten van de Noordzeebodem. Grondboor & Hamer, 27(3), 68–74.