Kaylaka Formation

The Kaylaka Formation,' also known as the Kajlâka Formation, is a Late Cretaceous (Maastrichtian) geologic formation located within Bisserna Cave, Shumen, and Labirinta Cave, Vratsa Province, both in Bulgaria.'

History

The first fossils found in the Kaylaka Formation were discovered in 1985 and were described in 2006.

The hadrosauroid specimen discovered in 1985 was described in 2024.

Paleofauna

• Anapachydiscus (Menuites) cf. terminus
• Anomotodon sp.'
• Elasmosauridae? indet.'
• Hadrosauroidea indet.
• Hemipneustes striatoradiatus
• Hoploscaphites constrictus
• Mosasauridae indet.'
• Mosasaurus cf. hoffmanni
• Squalicorax pristodontus