Also known as Chesapeake and Delaware Canal
Where: New Castle County, Delaware (39.8° N, 75.6° W: paleocoordinates 39.6° N, 46.8° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Mount Laurel Formation (Monmouth Group), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)
• 'lower marl bed of the Cretaceous'
• group of beds-level stratigraphic resolution
Environment/lithology: marine; marl
Size class: macrofossils
Preservation: mold/impression
Collected in 1867; reposited in the AMNH
Collection methods: quarrying,
Primary reference: O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 131935: authorized by Roger Benson, entered by Roger Benson on 02.08.2012, edited by Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
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Trionyx halophilus n. sp.1
Trionyx halophilus n. sp.1 Cope 1869 turtle In the Cope collection of reptiles in the American Museum of Natural History there is a lot of bones, No. 1476, consisting of about 35 fragments of costals, neurals, and at least 1 piece of the plastron. With these is found Cope's label, as follows: "Trionyx halophilus Cope. Type spec. Pics of Benj. Biggs, Summit Bridge, New Castle County, Del., 1867." In George H. Cook's Geology of New Jersey, p. 734, Cope states that in New Jersey this species comes from the lower marl bed of the Cretaceous
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