The Rabekke Formation is a
geological formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
dating to the latest
Jurassic
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of ...
or earliest
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...
, around 146 to 145 million years ago.
[Rabekke Formation]
at Fossilworks.org The formation
crops out on the island of
Bornholm,
Denmark
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.
Vertebrate
Vertebrates () comprise all animal taxa within the subphylum Vertebrata () (chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with c ...
fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
s have been found in the formation.
[
]
Fossil content
Dinosaurs
Small dromaeosaurid
Dromaeosauridae () is a family of feathered theropod dinosaurs. They were generally small to medium-sized feathered carnivores that flourished in the Cretaceous Period. The name Dromaeosauridae means 'running lizards', from Greek ('), meaning ...
and indeterminate maniraptora
Maniraptora is a clade of coelurosaurian dinosaurs which includes the birds and the non-avian dinosaurs that were more closely related to them than to ''Ornithomimus velox''. It contains the major subgroups Avialae, Deinonychosauria, Oviraptoros ...
n teeth have been uncovered in this formation. Sauropod tracks have also been found.[
]
Mammals
Crocodylomorphs
Birds
Small possible bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...
teeth
A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, t ...
have been identified in this formation.[
]
Turtles
Unidentified turtle
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked t ...
carapaces have been recovered from the formation.[
]
Fish
Scales
Scale or scales may refer to:
Mathematics
* Scale (descriptive set theory), an object defined on a set of points
* Scale (ratio), the ratio of a linear dimension of a model to the corresponding dimension of the original
* Scale factor, a number w ...
and jawbones of actinopterygian have been uncovered.[
]
Amphibians
Postcranial elements of amphibians have been identified.[
]
Lizards
Postcranial remains from lizards have been recovered.[
]
See also
* List of dinosaur-bearing rock formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
Containing body fossils
* List of stratigraphic units with dinosaur body fossils
** List of stratigraphic units with ...
* List of fossiliferous stratigraphic units in Denmark
See also
* Lists of fossiliferous stratigraphic units in Europe
** List of fossiliferous stratigraphic units in Norway
** List of fossiliferous stratigraphic units in Sweden
** List of fossiliferous stratigraphic units in Germany
References ...
References
{{reflist
Further reading
* F. Surlyk, J. Milàn, and N. Noe-Nygaard. 2008. Dinosaur tracks and possible lungfish aestivation burrows in a shallow coastal lake; lowermost Cretaceous, Bornholm, Denmark. Palaeogeography, Palaeoclimatology, Palaeoecology 267:292-304
* J. Lindgren, J. Rees, M. Siverson and G. Cuny. 2004. The first Mesozoic mammal from Scandinavia. GFF 126:325-330
* E. B. Koppelhus and D. J. Batten. 1992. Megaspore assemblages from the Jurassic and lowermost Cretaceous of Bornholm, Denmark. DGU, Danmarks Geologiske Undersogelse, Serie A 32:1-81
Geologic formations of Denmark
Lower Cretaceous Series of Europe
Cretaceous Denmark
Jurassic System of Europe
Jurassic Denmark
Berriasian Stage
Tithonian Stage
Mudstone formations
Siltstone formations
Shale formations
Lacustrine deposits
Ichnofossiliferous formations
Paleontology in Denmark
Formations