spoil piles, St. Georges (Marshalltown Formation) (Cretaceous of the United States)

Also known as Chesapeake and Delaware Canal

Where: Delaware (39.6° N, 75.7° W: paleocoordinates 39.0° N, 45.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marshalltown Formation (Matawan Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• potentially includes specimens from the Merchantville and Englishtown formations

• formation-level stratigraphic resolution

Environment/lithology: estuary or bay; green, argillaceous, silty sandstone

• "shallow marine water of an embayed area"
• "clayey, silty, grayish-green sand"

Size classes: macrofossils, mesofossils

Collection methods: salvage,

• collected from dredging spoil piles

Primary reference: E. M. Lauginiger. 1984. An Upper Campanian vertebrate fauna from the Chesapeake and Delaware Canal, Delaware. The Mosasaur 2:141-149 [J. Alroy/M. Sommers]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27570: authorized by John Alroy, entered by John Alroy on 11.12.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Arcida - Cucullaeidae
Cucullaea sp. Lamarck 1801 clam
 Ostreida - Gryphaeidae
 Ostreida - Flemingostreidae
"Ostrea falcata" = Agerostrea falcata
"Ostrea falcata" = Agerostrea falcata Morton 1827 oyster
 Cardiida - Cardiidae
Cardium sp. Linnaeus 1758 cockle
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Chondrichthyes
 Sclerorhynchiformes - Sclerorhynchidae
Sclerorhynchus sp. Woodward 1889 cartilaginous fish
Ischyrhiza mira Leidy 1856 cartilaginous fish
Ischyrhiza cf. avonicola Estes 1964 cartilaginous fish
 Sclerorhynchiformes - Ptychotrygonidae
Ptychotrygon vermiculata Cappetta 1975 cartilaginous fish
 Squatiniformes - Squatinidae
Squatina hassei Leriche 1929 angel shark
 Odontaspidida - Jaekelotodontidae
Hypotodus aculeatus elasmobranch
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1837 elasmobranch
 Hybodontiformes - Lonchidiidae
Lonchidion babulskii Cappetta and Case 1975 elasmobranch
 Myliobatiformes - Rhombodontidae
"Rhombodus levis" = Rhombodus laevis
"Rhombodus levis" = Rhombodus laevis Cappetta and Case 1975 stingray
 Myliobatiformes - Myliobatidae
Pseudohypolophus sp. Cappetta and Case 1975 eagle ray
Brachyrhizodus wichitaensis Romer 1942 eagle ray
 Rajiformes - Rhinobatidae
Rhinobatos casieri Herman 1975 guitarfish
 Lamniformes - Anacoracidae
Pseudocorax granti mackerel shark
Squalicorax kaupi Agassiz 1843 crow shark
Squalicorax pristodontus Agassiz 1843 crow shark
 Lamniformes -
 Lamniformes - Cretoxyrhinidae
Plicatolamna arcuata, "Plicatolamna borodini" = Cretodus borodini
Plicatolamna arcuata Woodward 1894 mackerel shark
"Plicatolamna borodini" = Cretodus borodini Cappetta and Case 1975 mackerel shark
 Lamniformes - Odontaspididae
"Odontaspis holmdelensis" = Synodontaspis holmdelensis Cappetta and Case 1975 sand tiger shark
Odontaspis samhammeri sand tiger shark
 Euselachii - Mitsukurinidae
Scapanorhynchus texanus Roemer 1852 goblin shark
 Chimaeriformes - Callorhynchidae
Ischyodus bifurcatus plownose chimaera
Actinopteri
 Elopiformes - Phyllodontidae
cf. Paralbula sp. Blake 1940
Paralbula casei Estes 1969
 Salmoniformes - Enchodontidae
Enchodus sp. Agassiz 1843
Enchodus ferox Leidy 1855
 Tetraodontiformes - Trigonodontoidae
Stephanodus sp. Zittel 1883
 Ichthyodectiformes - Ichthyodectidae
Xiphactinus sp. Leidy 1870
plus three other teleost tooth forms
 Pycnodontiformes - Pycnodontidae
 Lepisosteiformes - Lepisosteidae
cf. Lepisosteus sp. Agassiz 1843 gar
Reptilia
 Testudines - Trionychidae
Trionychidae indet.1 Gray 1825 softshell turtle
 Avetheropoda - Ornithomimidae
Ornithomimus antique3 ornithomimid
NJSM 12503, pedal phalanx
 Loricata -
Crocodylia indet.2 crocodilian
 Squamata - Mosasauridae
cf. Globidens sp. Gilmore 1912 mosasaur
cf. Clidastes sp. Cope 1868 mosasaur