| Black Peaks Formation | |
|---|---|
| Stratigraphic range: Maastrichtian-Danian (Tiffanian) ~ | |
| Type | Geological formation |
| Unit of | Tornillo Group |
| Overlies | Javelina Formation |
| Lithology | |
| Primary | Mudstone |
| Other | Limestone |
| Location | |
| Coordinates | 29°18′N 103°24′W / 29.3°N 103.4°W |
| Approximate paleocoordinates | 36°00′N 82°48′W / 36.0°N 82.8°W |
| Region |  Texas |
| Country |  USA |
  Black Peaks Formation (the United States)  Black Peaks Formation (Texas) | |
The Black Peaks Formation is a geological formation in Texas whose strata date back to the Late Cretaceous. Dinosaur remains (from the sauropod Alamosaurus) and the pterosaur Quetzalcoatlus northropi[1] have been among the fossils reported from the formation.[2][3] The boundary with the underlying Javelina Formation has been estimated at 66.5 million years old.[4] The formation preserves the rays Rhombodus and Dasyatis, as well as many gar scales.[5]
- ^ Andres, Brian; Langston, Wann (2021-12-14). "Morphology and taxonomy of Quetzalcoatlus Lawson 1975 (Pterodactyloidea: Azhdarchoidea)". Journal of Vertebrate Paleontology. 41 (sup1): 46–202. Bibcode:2021JVPal..41S..46A. doi:10.1080/02724634.2021.1907587. ISSN 0272-4634.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. ISBN 0-520-24209-2.
- ^ Lehman, T. M. and A. B. Coulson. 2002. A juvenile specimen of the sauropod dinosaur Alamosaurus sanjuanensis from the Upper Cretaceous of Big Bend National Park,Texas. Journal of Paleontology 76(1): 156-172.
- ^ Woodward, H. N. (2005). Bone histology of the sauropod dinosaur Alamosaurus sanjuanensis from the Javelina Formation, Big Bend National Park, Texas.
- ^ Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63-69.