Upper Hop Brook, Holmdel (Cretaceous of the United States)

Where: Monmouth County, New Jersey (40.3° N, 74.3° W: paleocoordinates 40.5° N, 49.8° W)

• coordinate based on political unit

When: upper Member (Mount Laurel Formation), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• said to be early Maastrichtian

• member-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Primary reference: D. W. Krause and D. Baird. 1979. Late Cretaceous Mammals East of the North American Western Interior Seaway. Journal of Paleontology 53(3):562-565 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14504: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Sclerorhynchiformes - Sclerorhynchidae
Ischyrhiza mira Leidy 1856 cartilaginous fish
subsp. mira
 Sclerorhynchiformes - Ptychotrygonidae
Ptychotrygon sp. Jaekel 1894 cartilaginous fish
 Odontaspidida - Jaekelotodontidae
Hypotodus aculeatus elasmobranch
 Hybodontiformes - Hybodontidae
Hybodus "sp. 1" Agassiz 1837 elasmobranch
 Myliobatiformes - Rhombodontidae
"Rhombodus levis" = Rhombodus laevis
"Rhombodus levis" = Rhombodus laevis Cappetta and Case 1975 stingray
 Myliobatiformes - Myliobatidae
Brachyrhizodus wichitaensis Romer 1942 eagle ray
 Lamniformes - Anacoracidae
Squalicorax kaupi Agassiz 1843 crow shark
Squalicorax pristodontus Agassiz 1843 crow shark
 Lamniformes -
 Lamniformes - Cretoxyrhinidae
Plicatolamna arcuata Woodward 1894 mackerel shark
Cretolamna appendiculata Agassiz 1843 mackerel shark
subsp. lata
"Plicatolamna borodini" = Cretodus borodini Cappetta and Case 1975 mackerel shark
 Lamniformes - Odontaspididae
"Odontaspis holmdelensis" = Synodontaspis holmdelensis, "Odontaspis hardingi" = Synodontaspis hardingi, Odontaspis samhammeri
"Odontaspis holmdelensis" = Synodontaspis holmdelensis Cappetta and Case 1975 sand tiger shark
"Odontaspis hardingi" = Synodontaspis hardingi 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
 Salmoniformes - Enchodontidae
Enchodus ferox Leidy 1855
 Tetraodontiformes - Trigonodontoidae
Stephanodus sp. Zittel 1883
 Pycnodontiformes - Pycnodontidae
Reptilia
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
 Testudines - Pancheloniidae
Prionochelys cf. nauta Zangerl 1953 turtle
 Avetheropoda -
cf. Dryptosaurus sp. Marsh 1877 coelurosaur
NJSM 14256; tooth
 Crocodylia - Alligatoridae
cf. Brachychampsa sp. Gilmore 1911 crocodilian
Mammalia
 Allotheria -
Multituberculata indet. Cope 1884 multituberculate
PU 21451