Sebeș Formation Explained

Sebeș Formation
Type:	Geological formation
Age:	Maastrichtian,
Period:	Maastrichtian
Prilithology:	Claystone
Otherlithology:	Sandstone, Conglomerate
Namedfor:	Sebeș
Region:	Europe
Underlies:	Unconformity
Overlies:	Bozeș Formation, Flysch
Extent:	Transylvanian Basin

The Sebeș Formation is a geological formation in Romania. It is of Maastrichtian age. It is laterally equivalent to the Sard Formation. The base of the formation consists of claystones interbedded with sandstones and conglomerates.^[1] It is well known for its fossils which form a component of the Hațeg Island fauna.

Paleobiota^[2]

Turtles

Turtles of the Sebeş Formation
Genus	Species	Notes	Images
Kallokibotion	K. bajazidi
	Indeterminate

Dinosaurs

Dinosaurs of the Sebeş Formation

Genus	Species	Notes	Images
Balaur^[3]	B. bondoc	Partial avialan skeleton, probably a junior synonym of Elopteryx^[4] ^[5]
Magyarosaurus	Indeterminate	The only known vertebra was probably eroded from the nearby Şard Formation and placed at Sebeș instead.
Struthiosaurus	S. transsylvanicus
Telmatosaurus	Indeterminate
Zalmoxes	Z. robustus
	Indeterminate

Pterosaurs

Pterosaurs of the Sebeş Formation
Genus	Species	Notes	Images
Hatzegopteryx	Indeterminate
Eurazhdarcho^[6]	E. langendorfensis

Notes and References

1. Vremir. Mátyás. Bălc. Ramona. Csiki-Sava. Zoltán. Brusatte. Stephen L.. Dyke. Gareth. Naish. Darren. Norell. Mark A.. May 2014. Petreşti-Arini – An important but ephemeral Upper Cretaceous continental vertebrate site in the southwestern Transylvanian Basin, Romania. Cretaceous Research. 49. 13–38. 10.1016/j.cretres.2014.02.002.
2. Web site: Sebes Formation. Paleobiology Database.
3. Z.. Csiki. Vremir, M.. Brusatte, S. L.. Norell, M. A.. 2010. An aberrant island-dwelling theropod dinosaur from the Late Cretaceous of Romania. Proceedings of the National Academy of Sciences of the United States of America. 107. 35. 15357–15361. 2010PNAS..10715357C. 10.1073/pnas.1006970107. 2932599. 20805514. free.
4. Brusatte . S. L. . Vremir . M. T. S. . Csiki-Sava . Z. N. . Turner . A. H. . Watanabe . A. . Erickson . G. M. . Norell . M. A. . The Osteology of Balaur bondoc, an Island-Dwelling Dromaeosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Romania . 10.1206/798.1 . Bulletin of the American Museum of Natural History . 374 . 1–100 . 2013 . 59932467 .
5. Stoicescu, V.. Codrea, V.A.. Bordeianu, M.. Solomon, A.A.. 2024. Elopteryx at Nălaț-Vad: new theropod material described from the Hațeg Basin (Romania). North-Western Journal of Zoology. 20. 1. 73—80.
6. Vremir. M. T. S.. Kellner. A. W. A.. Naish. D.. Dyke. G. J.. 2013. Viriot. Laurent. A New Azhdarchid Pterosaur from the Late Cretaceous of the Transylvanian Basin, Romania: Implications for Azhdarchid Diversity and Distribution. PLOS ONE. 8. 1. e54268. 10.1371/journal.pone.0054268. 3559652. 23382886. 2013PLoSO...854268V. free.