Hornerstown area (Hornerstown Fm.) (PROXY) (Cretaceous of the United States)

Where: Monmouth County, New Jersey (40.1° N, 74.6° W: paleocoordinates 40.4° N, 50.1° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Hornerstown Formation (Rancocas Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• lowermost part of formation

• member-level stratigraphic resolution

Environment/lithology: marginal marine; marl

Size class: mesofossils

Reposited in the YPM

Collection methods: quarrying,

Primary reference: O. C. Marsh. 1869. Notice of some new mosasauroid reptiles from the Greensand of New Jersey. American Journal of Science, second series 48(144):392-397 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 88034: authorized by Matthew Carrano, entered by Matthew Carrano on 30.03.2009, edited by Hallie Street, Roger Benson, Philip Mannion, Mark Uhen, Evangelos Vlachos and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Chimaeriformes - Callorhynchidae
"Dipristis meirsii n. sp." = Ischyodus miersii6
"Dipristis meirsii n. sp." = Ischyodus miersii6 Marsh 1869 plownose chimaera
Reptilia
 Testudines -
Catapleura ponderosa n. sp.3 Cope 1871 sea turtle
AMNH 1475, holotype fragmentary skeleton
 Testudines - Cheloniidae
Lytoloma jeanesii5 Cope 1870 sea turtle
First reported by Cope
 Testudines - Pancheloniidae
"Lytoloma wielandi" = Euclastes wielandi5
"Lytoloma wielandi" = Euclastes wielandi5 Hay 1908 turtle
Skull bones secured by O. C. Marsh
 Testudines - Adocidae
Adocus parvus4, "Adocus punctatus n. sp." = Adocus beatus9
"Adocus punctatus n. sp." = Adocus beatus9 Leidy 1865 turtle
YPM 780
 Testudines - Bothremydidae
Taphrosphys nodosus n. sp.2, "Taphrosphys leslianus n. sp." = Taphrosphys sulcatus2
Taphrosphys nodosus n. sp.2 Cope 1870 sideneck turtle
AMNH 1480
"Taphrosphys leslianus n. sp." = Taphrosphys sulcatus2 Leidy 1856 sideneck turtle
AMNH 1467; partial shell, collected by Dr. S. Lockwood
Aves
 Charadriiformes - Graculavidae
Palaeotringa vagans n. sp.8 Marsh 1872 shorebird
YPM 835
 Charadriiformes -
Graculavus pumilis n. sp.8, Graculavus velox n. gen. n. sp.8
Graculavus pumilis n. sp.8 shorebird
YPM 850
Graculavus velox n. gen. n. sp.8 Marsh 1872 shorebird
YPM 855
 Anseriformes -
"Telmatornis rex n. sp." = Anatalavis rex10
"Telmatornis rex n. sp." = Anatalavis rex10 Shufeldt 1915 waterfowl
YPM 902, 948
Reptilia
 Crocodylia -
Thoracosaurus sp.11, "Thoracosaurus meirsanus n. sp." = Thoracosaurus neocesariensis11
Thoracosaurus sp.11 Leidy 1852 crocodilian
YPM 280 (lower jaws) and YPM 281 (lower jaws)
"Thoracosaurus meirsanus n. sp." = Thoracosaurus neocesariensis11 De Kay 1842 crocodilian
YPM 404
 Loricata - Dyrosauridae
Hyposaurus rogersii4 Owen 1849 crocodilian
 Squamata - Mosasauridae
"Mosasaurus meirsii n. sp." = Mosasaurus dekayi, "Mosasaurus princeps n. sp." = Mosasaurus hoffmanni
"Mosasaurus meirsii n. sp." = Mosasaurus dekayi Bronn 1838 mosasaur
YPM 443
"Mosasaurus princeps n. sp." = Mosasaurus hoffmanni Mantell 1829 mosasaur
YPM 430
 Squamata -
Leiodon laticaudus n. sp.7 Marsh 1870 lizard
 Sauropterygia - Elasmosauridae
Elasmosauridae indet.1 Cope 1869 elasmosaur
YPM 449