In the different strata of the cliff one can find the remains of the animal life that were dominant at the time the strata were created.
This clam was formerly called Yoldia arctica. Today it is called Portlandia arctica. It has given its name to the sea it lived in. The Yoldia Sea stretched over large parts of Vendsyssel 17,000 years ago.
This clam was formerly called Saxicava arctica. Today it is called the Hiatella arctica or Rock Borer. It lived in the sand strata deposited in shallow water in the Yoldia Sea, which covered large parts of Vendsyssel 17,000 years ago. It has given its name to this sand, Saxicava sand.
This snail is also called the Common Beach Snail (Littorina littorea). It has given its name to the sea that spread over large parts of Vendsyssel after the continental period about 9,000 to 6,000 years ago.
Deposits from this sea are especially seen in the southern part of Lønstrup Cliff near Løkken Blånæse.