Jydegaard Formation
| Jydegaard Formation Stratigraphic range: Early Cretaceous, 145–140 Ma |
|
|---|---|
| Type | Geological Formation |
| Unit of | Nyker Group |
| Underlies | Arnager Greensand Formation |
| Overlies | Robbedale Formation |
| Lithology | |
| Primary | Claystone and Sandstone |
| Location | |
| Region | Bornholm |
| Country |  Denmark |
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]
Contents
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]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Genus | Species | Location | Material | Description | Images |
|---|---|---|---|---|---|
|
D. bornholmensis[1] |
Two teeth and possible coprolites.[2] |
Crocodilomorphs
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Genus | Species | Location | Material | Description | Images |
|---|---|---|---|---|---|
|
unknown |
Robbedale[1] |
A tooth tentatively referred to Pholidosaurus[3] |
File:Pholidosaurus tooth.jpg
Possible tooth
|
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]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Genus | Species | Location | Material | Description | Images |
|---|---|---|---|---|---|
|
L. sp[1] |
Robbedale[1] |
Teeth, jaws and scales[1] |
|||
|
unknown |
Robbedale[2] |
Teeth and scales[2] |
|||
|
P. rugianus[4] |
Robbedale[1] |
Teeth, finspines and head "hooks"[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
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Genus | Species | Location | Material | Description | Images |
|---|---|---|---|---|---|
|
unknown |
Robbedale[1] |
many specimens[1] |
Neomiodon specimens are thought to be victim to a mass mortality such as poisoning.[1] |
||
|
unknown |
Robbedale[1] |
many specimens[1] |
Viviparus specimens are thought to be victim to a mass mortality such as poisoning.[1] |
See also
Footnotes
- ↑ 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 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
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