Hornerstown area (Hornerstown Fm.) (PROXY): Late/Upper Maastrichtian, New Jersey

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Charadriiformes - Graculavidae
Palaeotringa vagans n. sp. Marsh 1872
Marsh 1872 1 specimen
YPM 835
Reptilia - Charadriiformes
Graculavus pumilis n. sp. (Marsh 1872)
Marsh 1872 1 specimen
synonym of Telmatornis priscus
YPM 850
Graculavus velox n. gen., n. sp. Marsh 1872
Marsh 1872 1 specimen
YPM 855
Reptilia
Hyposaurus rogersii Owen 1849
Gaffney et al. 2006
nomen dubium belonging to Dyrosauridae
Thoracosaurus sp. Leidy 1852
Troxell 1925 2 specimens
YPM 280 (lower jaws) and YPM 281 (lower jaws)
Thoracosaurus meirsanus n. sp. Troxell 1925
Troxell 1925 1 specimen
synonym of Thoracosaurus neocesariensis
YPM 404
Reptilia - Plesiosauria - Elasmosauridae
Ichthyosauria indet. de Blainville 1835
McGowan 1978 1 specimen
YPM 449
    = Elasmosauridae indet. Cope 1869
Bardet 1992
Reptilia - Mosasauridae
Liodon laticaudus n. sp.
Miller 1962
    = Leiodon laticaudus n. sp. Marsh 1870
Marsh 1870
recombined as Tylosaurus laticaudus
Mosasaurus meirsii n. sp. Marsh 1869
1 specimen
synonym of Mosasaurus dekayi
YPM 443
Mosasaurus princeps n. sp. Marsh 1869
1 specimen
synonym of Mosasaurus hoffmannii
YPM 430
Reptilia - Testudines
Taphrosphys leslianus n. sp. Cope 1870
Cope 1870 1 specimen
synonym of Taphrosphys sulcatus
AMNH 1467; partial shell, collected by Dr. S. Lockwood
Taphrosphys nodosus n. sp. Cope 1870
Cope 1870 1 specimen
AMNH 1480
Lytoloma wielandi Hay 1908
Hay 1908
recombined as Euclastes wielandi
Skull bones secured by O. C. Marsh
Catapleura ponderosa n. sp. Cope 1871
Cope 1871 1 specimen
synonym of Euclastes wielandi
AMNH 1475, holotype fragmentary skeleton
Reptilia - Testudines - Cheloniidae
Lytoloma jeanesii Cope 1870
Hay 1908 1 specimen
First reported by Cope
Reptilia - Testudines - Adocidae
Adocus parvus
Gaffney et al. 2006
Adocus punctatus n. sp. Marsh 1890
Marsh 1890 1 specimen
synonym of Adocus beatus
YPM 780
Chondrichthyes - Chimaeriformes - Edaphodontidae
Dipristis meirsii n. sp. Marsh 1869
Marsh 1869
recombined as Edaphodon miersii
see common names

Geography
Country:United States State/province:New Jersey County:Monmouth
Coordinates: 40.1° North, 74.6° West (view map)
Paleocoordinates:40.4° North, 50.1° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Rancocas Formation:Hornerstown
Stratigraphic resolution:member
Stratigraphy comments: lowermost part of formation
Lithology and environment
Primary lithology: marl
Includes fossils?Y
Environment:marginal marine indet.
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:mesofossils
Preservation of anatomical detail:good
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:frequent
Collection methods and comments
Collection methods:selective quarrying,survey of museum collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:YPM
Metadata
Database number:88034
Authorizer:M. Carrano, R. Benson, M. Uhen, E. Vlachos, A. Dunhill, P. Mannion Enterer:M. Carrano, R. Benson, B. Allen, P. Mannion, H. Street, E. Vlachos, M. Uhen
Modifier:M. Carrano Research group:vertebrate
Created:2009-03-30 14:14:53 Last modified:2022-01-24 11:10:03
Access level:the public Released:2009-03-30 14:14:53
Creative Commons license:CC BY
Reference information

Primary reference:
12243.ETE O. C. Marsh. 1869. Notice of some new mosasauroid reptiles from the Greensand of New Jersey. American Journal of Science, second series 48(144):392-397 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

43183 N. Bardet. 1992. Stratigraphic evidence for the extinction of the ichthyosaurs. Terra Nova 4:649-656 [M. Uhen/M. Uhen]
35435 E. D. Cope. 1870. Synopsis of the Extinct Batrachia, Reptilia and Aves of North America. Part II. Transactions of the American Philosophical Society, New Series 14:105-235 [M. Carrano/M. Carrano/M. Uhen]
17161ETE E. D. Cope. 1871. Supplement to the "Synopsis of the Extinct Batrachia and Reptilia of North America". Proceedings of the American Philosophical Society 12:41-52 [M. Carrano/M. Carrano]
764 E. S. Gaffney. 1975. A revision of the side-necked turtle Taphrosphys sulcatus (Leidy) from the Cretaceous of New Jersey. American Museum Novitates 2571:1-24 [J. Alroy/M. Sommers/P. Mannion]
27976 E. S. Gaffney, H. Tong, and P. A. Meylan. 2006. Evolution of the side-necked turtles: The families Bothremydidae, Euraxemydidae, and Araripemydidae. Bulletin of the American Museum of Natural History 300:1-318 [M. Uhen/M. Uhen/M. Uhen]
54671 W. B. Gallagher. 1993. The Cretaceous/Tertiary mass extinction event in the North Atlantic coastal plain. The Mosasaur 5:75-154 [M. Carrano/M. Carrano]
14442ETE O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano]
62667 O. C. Marsh. 1869. Notice of some new Tertiary and Cretaceous fishes. Proceedings of the American Association for the Advancement of Science 20(5):227-230 [M. Uhen/M. Uhen]
12244ETE O. C. Marsh. 1870. On a number of vertebrae of a new Dinosaurian from the Cretaceous green sand near Barnsboro. Proceedings of the Academy of Natural Sciences of Philadelphia 22:2-3 [M. Carrano/M. Carrano/M. Carrano]
34551ETE O. C. Marsh. 1872. Preliminary description of Hesperornis regalis, with notices of four other new species of Cretaceous birds. The American Journal of Science and Arts, series 3 3(13-18):360-365 [M. Carrano/M. Carrano]
23561ETE O. C. Marsh. 1890. Notice of some extinct Testudinata. The American Journal of Science and Arts, series 3 40:177-179 [M. Carrano/M. Carrano]
33931 C. McGowan. 1974. A revision of the latipinnate ichthyosaurs of the Lower Jurassic of England (Reptilia: Ichthyosauria). Life Sciences Contribution Royal Ontario Museum 100:1-30 [M. Carrano/H. Street/M. Carrano]
33937 C. McGowan. 1978. An isolated ichthyosaur coracoid from the Maastrichtian of New Jersey. Canadian Journal of Earth Sciences 15:169-171 [M. Carrano/H. Street]
62802 H. W. Miller. 1962. Appendix A: the Cretaceous reptiles of New Jersey. In H. G. Richards (ed.), The Cretaceous Fossils of New Jersey, Part II 61:193-196 [M. Carrano/M. Carrano]
29473ETE S. L. Olson and D. C. Parris. 1987. The Cretaceous birds of New Jersey. Smithsonian Contributions to Paleobiology 63:1-22 [M. Carrano/M. Carrano]
46726 E. L. Troxell. 1925. Thoracosaurus, a Cretaceous crocodile. American Journal of Science 10(57):219-233 [P. Mannion/P. Mannion]