Ialovachsk Formation

The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period.^[1]

Ialovachsk Formation
Stratigraphic range: Santonian 85 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Lithology
Primary	Sandstone
Other	Conglomerate
Location
Coordinates	40.2°N 71.7°E / 40.2; 71.7
Approximate paleocoordinates	34.9°N 65.8°E / 34.9; 65.8
Region	Jalal-Abad, Osh Sughd Fergana
Country	Kyrgyzstan, Tajikistan, Uzbekistan
Extent	Fergana Valley & Range
Ialovachsk Formation (Kyrgyzstan)

Fossil content

Fossil dinosaur eggs^[1] as well as pterosaur, dinosaur,^[2][3] turtle^[4] and crocodyliforme^[5][6] remains have been recovered from the formation.^[7]

The following fossils have been reported from the formation:

Amphibians

• Eopelobates sp.
• Eoscapherpeton superum

Mammals

• ?Kulbeckia kulbecke

Snakes

• Squamata indet.

Turtles

• Adocus foveatus
• Anatolemys maximus
• Lindholmemys gravis
• Shachemys baibolatica
• Trionyx kansaiensis
• T. riabinini

Dinosaurs

• cf. Alectrosaurus sp.
• Ankylosauridae indet.
• ?Ceratopsidae indet.
• Dromaeosauridae indet.
• Hadrosauridae indet.
• cf. Hypsilophodontidae indet.
• Kansaignathus sogdianus
• ?Neoceratopsia indet.
• Neosauropoda indet.
• Ornithomimidae indet.
• ?Oviraptoridae indet.
• Therizinosauridae indet.
• ?Theropoda indet.
• Troodontidae indet.
• Tyrannosauridae indet.

Other archosaurs

• Azhdarchidae indet.
• ?Azhdarcho sp.
• Aves indet.
• Kansajsuchus extensus
• ?Pterosauria indet.
• Tadzhikosuchus macrodentis

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with dinosaur trace fossils
    • Dinosaur eggs