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The Jydegaard Formation (also spelt as Jydegård) is a geological formation dating to the Early Cretaceous, about 145 to 140 million years ago. It is on the island of Bornholm, Denmark. Vertebrate fossils have been found in the formation.[1]

Vertebrates[]

Thin bone fragments have been uncovered that may belong to pterosaurs or birds.[1]

Dinosaurs[]

A tooth possibly belonging to a juvenile titanosaur has been found in the formation.[1]

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Genus Species Location Material Description Images

Dromaeosauroides[1]

D. bornholmensis[1]

Robbedale[1]

Two teeth and possible coprolites.[2]

Crocodilomorphs[]

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Genus Species Location Material Description Images

Pholidosaurus[1]

unknown

Robbedale[1]

A tooth tentatively referred to Pholidosaurus[3]

Fish[]

Fish remains have been found in coprolites possibly belonging to the dromaeosaur Dromaeosauroides or marine turtles. Also, unidentified pycnodont jaws and two small stem-teleosteans have been uncovered. Amioid scales have also been revealed.[1]

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Genus Species Location Material Description Images

Lepidotes[1]

L. sp[1]

Robbedale[1]

Teeth, jaws and scales[1]

Hybodus[2]

unknown

Robbedale[2]

Teeth and scales[2]

Parvodus[1]

P. rugianus[4]

Robbedale[1]

Teeth, finspines and head "hooks"[1]

Pleuropholis[1]

P. serrata[5]

Robbedale[1]

unknown

Turtles[]

Unidentified turtle carapaces have been uncovered in the Formation.[1]

Lizards[]

A lower jaw from a lizard has been recovered from the formation.[1]

Bivalves[]

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Genus Species Location Material Description Images

Neomiodon[1]

unknown

Robbedale[1]

many specimens[1]

Neomiodon specimens are thought to be victim to a mass mortality such as poisoning.[1]

Viviparus[1]

unknown

Robbedale[1]

many specimens[1]

Viviparus specimens are thought to be victim to a mass mortality such as poisoning.[1]

See also[]

  • List of fossiliferous stratigraphic units in Denmark

Footnotes[]

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 Bonde, N. (2003). "New dinosaurs from Denmark". Comptes Rendus Paleovol (13). DOI:10.1016/51631-0683(03)00009-5. 
  2. 2.0 2.1 2.2 2.3 Milàn, J. (2012). "Coprolites with prey remains from the Lower Cretaceous (Late Berriasian) Jydegaard Formation of Bornholm, Denmark". New Mexico Museum of Natural History and Science. Bulletin 57: 235–240. 
  3. (2009) "Lower Cretaceous Mesoeucrocodylians from Scandinavia (Denmark and Sweden)". Cretaceous Research 30 (5): 1345. DOI:10.1016/j.cretres.2009.07.011. 
  4. "Parvodus rugianus". Paleobiology Database. http://paleodb.org/?a=basicTaxonInfo&taxon_no=251914. Retrieved 25 September 2013. 
  5. "Pleuropholis serrata". Paleobiology Database. http://paleodb.org/?a=basicTaxonInfo&taxon_no=99838. Retrieved 25 September 2013. 
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