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

Show authors, comments, and common names
Actinopteri
 Pycnodontiformes - Pycnodontidae
Anomoeodus phaseolus
 Aulopiformes - Enchodontidae
Enchodus sp., Enchodus ferox
Enchodus sp. Agassiz 1835
Enchodus ferox Leidy 1855
 Tetraodontiformes - Eotrigonodontidae
Stephanodus sp.
Stephanodus sp. Zittel 1883
 Ichthyodectiformes - Ichthyodectidae
Xiphactinus sp.
Xiphactinus sp. Leidy 1870
plus three other teleost tooth forms
 Elopiformes - Phyllodontidae
cf. Paralbula sp., Paralbula casei
cf. Paralbula sp. Blake 1940
Paralbula casei Estes 1969
 Lepisosteiformes - Lepisosteidae
cf. Lepisosteus sp.
cf. Lepisosteus sp. Agassiz 1843 gar
Reptilia
 Theropoda -
"Ornithomimus antiquus" = Coelosaurus antiquus3
"Ornithomimus antiquus" = Coelosaurus antiquus3 Leidy 1865 ornithomimosaur
NJSM 12503, pedal phalanx
 Loricata -
Crocodylia indet.2
Crocodylia indet.2 crocodilian
 Squamata - Mosasauridae
cf. Globidens sp., cf. Clidastes sp.
cf. Globidens sp. Gilmore 1912 mosasaur
cf. Clidastes sp. Cope 1868 mosasaur
 Testudines - Trionychidae
Trionychidae indet.1
Trionychidae indet.1 Gray 1825 softshell turtle
Osteichthyes
 Acipenseriformes -
cf. Cylindracanthus sp.
cf. Cylindracanthus sp. Leidy 1856 ray-finned fish
plus "Sturgeon scute"
Chondrichthyes
 Chimaeriformes - Callorhynchidae
Ischyodus bifurcatus
Ischyodus bifurcatus Case 1978 plownose chimaera
 Myliobatiformes - Rhombodontidae
Rhombodus levis
Rhombodus levis Cappetta and Case 1975 stingray
 Myliobatiformes - Myliobatidae
Brachyrhizodus wichitaensis
Brachyrhizodus wichitaensis Romer 1942 eagle ray
 Rajiformes -
Pseudohypolophus sp.
Pseudohypolophus sp. Cappetta and Case 1975 guitarfish
 Rajiformes - Rhinobatidae
Rhinobatos casieri
Rhinobatos casieri Herman 1977 guitarfish
 Rajiformes - Ptychotrygonidae
Ptychotrygon vermiculata
Ptychotrygon vermiculata Cappetta 1975 ray
 Rajiformes - Sclerorhynchidae
Sclerorhynchus sp., Ischyrhiza mira, Ischyrhiza cf. avonicola
Sclerorhynchus sp. Woodward 1889 ray
Ischyrhiza mira Leidy 1856 ray
Ischyrhiza cf. avonicola Estes 1964 ray
 Squatiniformes - Squatinidae
Squatina hassei
Squatina hassei Leriche 1929 angel shark
 Orectolobiformes - Ginglymostomatidae
"Ginglymostoma globidens" = Plicatoscyllium globidens
"Ginglymostoma globidens" = Plicatoscyllium globidens Cappetta and Case 1975 nurse shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus texanus
Scapanorhynchus texanus Roemer 1852 goblin shark
 Lamniformes - Pseudoscapanorhynchidae
"Plicatolamna borodini" = Protolamna borodini
"Plicatolamna borodini" = Protolamna borodini Cappetta and Case 1975 mackerel shark
 Lamniformes - Carchariidae
"Odontaspis holmdelensis" = Carcharias holmdelensis, "Odontaspis samhammeri" = Carcharias samhammeri
"Odontaspis holmdelensis" = Carcharias holmdelensis Cappetta and Case 1975 sand shark
"Odontaspis samhammeri" = Carcharias samhammeri Cappetta and Case 1975 sand shark
 Lamniformes - Pseudocoracidae
Pseudocorax granti
Pseudocorax granti Cappetta and Case 1975 mackerel shark
 Lamniformes - Archaeolamnidae
"Plicatolamna arcuata" = Archaeolamna kopingensis
"Plicatolamna arcuata" = Archaeolamna kopingensis Davis 1890 mackerel shark
 Lamniformes - Odontaspididae
"Hypotodus aculeatus" = Odontaspis aculeatus
"Hypotodus aculeatus" = Odontaspis aculeatus Cappetta and Case 1975 sand tiger shark
 Lamniformes - Alopiidae
Paranomotodon angustidens
Paranomotodon angustidens Reuss 1845 thresher shark
 Lamniformes - Anacoracidae
Squalicorax kaupi, Squalicorax pristodontus
Squalicorax kaupi Agassiz 1843 crow shark
Squalicorax pristodontus Agassiz 1835 crow shark
 Hybodontiformes - Lonchidiidae
Lonchidion babulskii
Lonchidion babulskii Cappetta and Case 1975 elasmobranch
 Hybodontiformes - Hybodontidae
Hybodus sp.
Hybodus sp. Agassiz 1834 elasmobranch
Bivalvia
 Trigoniida - Trigoniidae
Trigonia sp.
Trigonia sp. Bruguière 1789 clam
 Cardiida - Cardiidae
Cardium sp.
Cardium sp. Linnaeus 1758 cockle
 Arcida - Cucullaeidae
Cucullaea sp.
Cucullaea sp. Lamarck 1801 clam
 Ostreida - Gryphaeidae
Exogyra ponderosa
 Ostreida - Flemingostreidae
"Ostrea falcata" = Agerostrea falcata
"Ostrea falcata" = Agerostrea falcata Morton 1827 oyster
1Alroy 2006; 2Alroy 2007; 3Gallagher 1993