Karabaglyar Formation

The Karabaglyar Formation is a geologic formation in Armenia and Azerbaijan. It preserves fossils dating back to the Changhsingian to Induan stages of the Permian and Triassic periods (Dienerian or Griesbachian) in the regional stratigraphy, straddling the Permian-Triassic boundary.[1]

Karabaglyar Formation Stratigraphic range: Changhsingian-Induan (Dienerian or Griesbachian) ~252.3–251.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Limestone
Other	Claystone
Location
Coordinates	39.5°N 45.4°E
Approximate paleocoordinates	0.3°S 38.8°E
Region	Transcaucasia
Country	Armenia  Azerbaijan
Type section
Named for	Karabaglyar
Karabaglyar Formation (Caucasus mountains)

Fossil content

The following fossils have been reported from the formation:[1][2]

Ammonites

• Eumorphotis venetiana
• Meekophiceras dubium
• Ophiceras (Lytophiceras) medium
• Eumorphotis sp.
• Gyronites sp.
• Koninckites sp.
• Kymatites sp.
• Lytophiceras sp.
• Ophiceras sp.

Bivalves

• Claraia aurita
• Claraia clarai
• Claraia stachei
• Claraia wangi
• Claraia sp.

See also

• List of fossiliferous stratigraphic units in Armenia
• List of fossiliferous stratigraphic units in Azerbaijan
• Gnishik Formation
• Permian–Triassic extinction event

References

1. Karabaglyar Formation at Fossilworks.org
2. Kotlyar et al., 1993

Bibliography

• Kotlyar, G. V.; Y. D. Zakharov; G. S. Koczyrkrevicz; G. S. Kropacheva; K. O. Rostovcev; I. O. Chedija; G. P. Vuks, and E. A. Guseva. 1983. Evolution of the latest Permian biota: Dzhulfian and Dorashamian regional stages in the USSR, 1–200. ..