Ladd Formation
The Ladd Formation is a Mesozoic geologic formation located in Orange County, California.
| Ladd Formation Stratigraphic range: Late Cretaceous | |
|---|---|
| Type | Geological formation |
| Location | |
| Region | California |
| Country | United States |
Paleofauna
Dinosaur remains (mainly hadrosaurid fragments) are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1] In 1927 Bernard Nettleton Moore found a hadrosaur maxilla with teeth while searching for ammonites in the formation. In 1950 Marlon V. Kirk found a plesiosaur centrum (spool of the vertebra). In 1978 Robert Drachuk, also while searching for ammonites, collected a hadrosaur cranial fragment from a limestone concretion. In 1992 Robert D. Hansen found the distal tibia of a hadrosaur.[2]
| Vertebrates of the Moreno Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Member | Abundance | Notes | Images |
See also
- List of dinosaur-bearing rock formations
Footnotes
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- Hilton (2003), pp. 233-34, 241.
- "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 277
References
- Hilton, Richard P. 2003. Dinosaurs and Other Mesozoic Reptiles of California. Berkeley: University of California Press. 318 pp.
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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