Marshalltown Formation
| Marshalltown Formation | |
|---|---|
| Stratigraphic range: Middle to Late Campanian, | |
| Type | Geological formation |
| Underlies | Wenonah Formation |
| Overlies | Englishtown Formation |
| Lithology | |
| Primary | Glauconite |
| Location | |
| Region |  New Jersey |
| Country |  USA |
| Type section | |
| Named for | Marshalltown, New Jersey |
The Marshalltown Formation is a Mesozoic geologic formation. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[1][2]
The famous Ellisdale Fossil Site, a konzentrat-lagerstätten which contains one of the most diverse Cretaceous vertebrate assemblages known from eastern North America (likely rapidly buried in a massive flood event), is an exposure of this formation.[3]
The Marshalltown Formation stretches across southern New Jersey, and is largely composed of marine sediments deposited off the eastern shore of Appalachia, although the Ellisdale site represents a deltaic or estuarine environment, and thus has more of a terrestrial influence.[3]
Vertebrate paleobiota
[edit]Dinosaurs known from the formation:[4][5]
- Hypsibema crassicauda
- Hadrosaurus sp.
- Nodosauridae indet.
- Dryptosaurus sp.
- Tyrannosauroidea indet.
- Dromeosauridae indet.
- Theropoda indet.
See also
[edit]
Footnotes
[edit]- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ "Geolex — Marshalltown publications". ngmdb.usgs.gov. Retrieved 2024-11-12.
- ^ a b "PBDB Collection". paleobiodb.org. Retrieved 2024-11-12.
- ^ Brownstein, Chase D. (2018). "The distinctive theropod assemblage of the Ellisdale site of New Jersey and its implications for North American dinosaur ecology and evolution during the Cretaceous". Journal of Paleontology. 92 (6): 1115–1129. doi:10.1017/jpa.2018.42. ISSN 0022-3360.
- ^ Brownstein, Chase D. (2018-02-08). "The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia". Palaeontologia Electronica. 21 (1): 1–56. doi:10.26879/801. ISSN 1094-8074.
References
[edit]- 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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