Hasle Formation

Hasle Formation Stratigraphic range: Early Jurassic, 190 Ma PreЄ Є O S D C P T J K Pg N ↓
Underlies	Sorthat Formation
Overlies	Rønne Formation
Thickness	80-140 meters
Lithology
Primary	Siltstone, Sandstone
Location
Region	Bornholm
Country	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]

Vertebrates

Fish

Unidentified fin spines are known from this formation.^[1]

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Genus	Species	Material	Notes	Images
Hybodus[1]	H. reticulatus[1]	unknown		Restoration of Hybodus
	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

Ammonites

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Genus	Species	Material	Notes	Images
Aegoceras[2]	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]
Apderoceras[2]	A. aculeatum[2]	specimens[2]
Arnioceras[2]	A. falcaries[2]	specimens[2]
Beaniceras[2]	B. centaurus[2]	specimens[2]	Senior synonym of Aegoceras centaurus[2]
Coeloceras[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]
Paramicroderoceras[2]	P. fila[2]	specimens[2]
	P.? sp indet[2]	specimens[2]
Phylloceras[2]	P. losconnbii[2]	specimens[2]
Phricedoceras[2]	P. taylori[2]	specimens[2]
Platypleuroceras[2]	P. brevispina[2]	specimens[2]
	P. submulticum[2]	specimens[2]
	P. caprarium[2]	specimens[2]
	P. spp. indet[2]	specimens[2]
Radstockiceras[2]	R. hechingense[2]	specimens[2]
Tragophyloceras[2]	T. numismale[2]	specimens[2]
	T. sp[2]	specimens[2]
Uptonia[2]	U. lata[2]	specimens[2]
	U. sp indet[2]	specimens[2]

See Also

• List of fossiliferous stratigraphic units in Denmark

References

1. Rees, J. (1998). "Early Jurassic selachians from the Hasle Formation on Bornholm, Denmark" (PDF). Acta Palaeontologica Polonica. 43 (3): 43–439.
2. Donovan, Desmond T. & Surlyk, Finn. "Lower Jurassic (Pliensbachian) ammonites from Bornholm, Baltic Sea, Denmark" (PDF). Geological Survey of Denmark and Greenland Bulletin. 1: 555–583.