Ajka boreholes (Cretaceous of Hungary)

Also known as Káptalanfa-2, Kf-2, Gyepükaján-12, Gy-12

Where: Veszprém, Hungary (47.1° N, 17.6° E: paleocoordinates 30.9° N, 18.5° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ajka Coal Formation, Santonian (86.3 - 83.6 Ma)

• Kf-2 from 803 m down; Gy-12 from 473 m down.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine delta plain; argillaceous marl and sandstone

• freshwater, swampy and lacustrine settings, "lacustrine, peat-fen" (lacustrine-palustrine)
• "an alternation of lignite beds, marls, sands and sandstone beds, and grey to brownish carbonaceous to argillaceous pelitic sediments with interbedded molluscan lumachelles"

Size classes: macrofossils, mesofossils

Collected by Z. Partényi in the 1980s

Collection methods: core,

• Fossils discovered in 1980s by Zoltán Partényi, but date of coring is unknown.

Primary reference: A. Osi, E. R. Bodor, L. Makádi and M. Rabi. 2015. Vertebrate remains from the Upper Cretaceous (Santonian) Ajka Coal Formation, western Hungary. Cretaceous Research 57:228-238 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 173314: authorized by Matthew Carrano, entered by Matthew Carrano on 16.09.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Sauropsida -
Sauropsida indet. Huxley 1864 amniote
bone fragment, MFGI V.18765
Reptilia
 Testudines - Bothremydidae
Bothremydidae indet. sideneck turtle
shell fragments, MFGI V.18763; MFGI V.18764
 Ornithischia - Nodosauridae
Nodosauridae indet. Marsh 1890 ankylosaur
osteoderm, MFGI V.18762
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
vertebra, MFGI V.18761