Hasle Formation
| Hasle Formation | |
|---|---|
| Stratigraphic range: Late Pliensbachian ~ | |
| Underlies | Sorthat Formation |
| Overlies | Rønne Formation |
| Thickness | 80–140 m (260–460 ft) |
| Lithology | |
| Primary | Siltstone, sandstone |
| Location | |
| Coordinates | 55°12′N 14°42′E / 55.2°N 14.7°E |
| Approximate paleocoordinates | 45°00′N 18°30′E / 45.0°N 18.5°E |
| Region | Bornholm |
| Country |  Denmark |
  Hasle Formation (Denmark) | |
The Hasle Formation is a geologic formation on the island on Bornholm, Denmark. It is of early to late Pliensbachian age. Vertebrate fossils have been uncovered from this formation.[1][2]
Fossil content
Fish
Unidentified fin spines are known from this formation.[1]
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
| Hybodus[1] | H. reticulatus[1] | unknown |  | |
| H. delabechei[1] | unknown | |||
| Lissodus | L. hasleensis sp. n.[1] | unknown | ||
| Synechodus[1] | S. occultidens[1] | unknown | ||
| Paraorthacodus[1] | P. sp[1] | unknown | ||
| Agaleus[1] | A. dorsetensis[1] | unknown | ||
| Oblidens[3] | O. bornholmensis[1] | Upper posterior (palatine) and lower posterior (mandibular) tooth plates. |
Reptiles
Theropods
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
|
Indeterminate |
25 mm footprints referred to a non-avian Theropod.[4] |
Footprints of an Small Theropod Dinosaur, probably a member of Neotheropoda, related to genera such as Tachiraptor or Dracoraptor. |
Sauropodomorpha
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
|
Massopoda Indeterminate |
DK966, an upper part of a femur from a juvenile animal |
A Massopoda Sauropodomorph. DK966 has been compared with various taxa from the lower jurassic: "Aristosaurus erectus", a young Massospondylus, various Massospondylus specimens, Lufengosaurus huenei holotype, Seitaad ruessi, Thecodontosaurus, Pantydraco, etc. DK966 can be probably a young specimen of Massopoda, related to Massospondylus, more than a Plateosaurid or an Anchisaurid. We find it related to "Hortalotarsus", "Aristosaurus" and Massospondylus more than Seitaad for example. Based on the several taxa we had compared probably presented a body similar to Pantydraco being a young specimen. The complete bone is estimated on only 6 cm, making the animal no more than 70 cm length. |
Ammonites
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
|
A. centaurus[2] |
specimens[2] |
Later renamed Beaniceras centaurus, senior synonym of Aegoceras centaurus[2] |
||
|
A. armatum[2] |
specimens[2] |
|||
|
A. capraius[2] |
specimens[2] |
|||
|
A. mangenesti[2] |
specimens[2] |
|||
|
A. pettos[2] |
specimens[2] |
Junior synonym of Coeloceras pettos, possible synonym of Coeloceras grenouillouxi[2] |
||
|
Uncertain |
? Acanthopleuroceras sp. indet.[2] |
specimens[2] |
||
|
A. aculeatum[2] |
specimens[2] |
|||
|
A. falcaries[2] |
specimens[2] |
|||
|
B. centaurus[2] |
specimens[2] |
Senior synonym of Aegoceras centaurus[2] |
||
|
C. pettos[2] |
specimens[2] |
Senior synonym of Aegoceras pettos. Possible junior synonym of Coeloceras grenouillouxi[2] |
||
|
C. grenouillouxi[2] |
specimens[2] |
Possible senior synonym of Coeloceras pettos[2] |
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|
P. fila[2] |
specimens[2] |
|||
|
P.? sp indet[2] |
specimens[2] |
|||
|
P. losconnbii[2] |
specimens[2] |
|||
|
P. taylori[2] |
specimens[2] |
|||
|
P. brevispina[2] |
specimens[2] |
|||
|
P. submulticum[2] |
specimens[2] |
|||
|
P. caprarium[2] |
specimens[2] |
|||
|
P. spp. indet[2] |
specimens[2] |
|||
|
R. hechingense[2] |
specimens[2] |
|||
|
T. numismale[2] |
specimens[2] |
|||
|
T. sp[2] |
specimens[2] |
|||
|
U. lata[2] |
specimens[2] |
|||
|
U. sp indet[2] |
specimens[2] |
Color key
|
Notes Uncertain or tentative taxa are in small text; |
See also
References
- ^ a b c d e f g h i j k l m Rees, J. (1998). "Early Jurassic selachians from the Hasle Formation on Bornholm, Denmark" (PDF). Acta Palaeontologica Polonica. 43 (3): 43–439.
- ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn "Lower Jurassic (Pliensbachian) ammonites from Bornholm, Baltic Sea, Denmark" (PDF). Geological Survey of Denmark and Greenland Bulletin. 1: 555–583.
{{cite journal}}: Unknown parameter|authors=ignored (help) - ^ Christopher J. Duffin; Jesper Milàn (2017). "A new myriacanthid holocephalian from the Early Jurassic of Denmark" (PDF). Bulletin of the Geological Society of Denmark. 65: 161–170.
- ^ a b Jesper Milàn, Finn Surlyk. 2014: An enigmatic, diminutive theropod footprint in the shallow marine Pliensbachian Hasle Formation, Bornholm, Denmark
- ^ Milàn, J., Cuny, G. (2019):Knogle fra mini sauropod fundet ved Hasle. Geomuseum Faxe Danmark. University of Lyon Frankrig. https://www.researchgate.net/publication/332291953_Knogle_fra_mini_sauropod_fundet_ved_Hasle