St. George's spoils piles (Merchantville Fm.) (Cretaceous of the United States)

Also known as Chesapeake & Delaware Canal

Where: New Castle County, Delaware (39.5° N, 75.7° W: paleocoordinates 39.0° N, 45.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Merchantville Formation (Matawan Group), Early/Lower Campanian (83.5 - 70.6 Ma)

• spoils piles - no stratigraphy remaining

• formation-level stratigraphic resolution

Environment/lithology: marine; tabular, glauconitic, micaceous, black, gray, argillaceous, silty sandstone

• "thick-bedded, silty and clayey sand grading downward from pale gray to dark grayish black, glauconitic and micaceous"

Size classes: macrofossils, mesofossils

Collected by E. Hartstein

Collection methods: salvage,

Primary reference: D. Baird and P. M. Galton. 1981. Pterosaur bones from the Upper Cretaceous of Delaware. Journal of Vertebrate Paleontology 1(1):67-71 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46566: authorized by Matthew Carrano, entered by Matthew Carrano on 19.01.2005, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

 Pectinida - Anomiidae
Anomia argentaria1 Morton 1833 jingle
 Ostreida - Gryphaeidae
"Exogyra costata" = Exogyra (Exogyra) costata1
"Exogyra costata" = Exogyra (Exogyra) costata1 Say 1971 oyster
 Ostreida - Flemingostreidae
"Ostrea falcata" = Agerostrea falcata1
"Ostrea falcata" = Agerostrea falcata1 Morton 1827 oyster
 Ammonitida - Placenticeratidae
Placenticeras placenta1 DeKay 1828 ammonite
 Testudines -
Toxochelys sp. Cope 1873 turtle
 Avetheropoda -
Dryptosaurus sp.2, "Ornithomimus antiquus" = Coelosaurus antiquus2
Dryptosaurus sp.2 Marsh 1877 coelurosaur
YPM-PU 21795
"Ornithomimus antiquus" = Coelosaurus antiquus2 Leidy 1865 ornithomimosaur
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
PU 22177 (partial caudal vertebra)
 Squamata - Mosasauridae
Mosasauridae indet.1 Gervais 1852 mosasaur
Tylosaurus sp. Marsh 1872 mosasaur