Tar Heel/Coachman Formation Explained

Tar Heel/Coachman Formation
Type:Formation
Age:Campanian
~
Unitof:Black Creek Group
Underlies:Bladen Formation

The Tar Heel Formation is a geologic formation in North Carolina. It preserves fossils, including amber dating back to the Cretaceous period. A locality known as Phoebus Landing, has been dated to 78.5-77.1 Ma.[1]

Fish

Cartilaginous fish[2]

Cartilaginous fish of the Tar Heel/Coachman Formation
GenusSpeciesLocationNotesImages
IschyrhizaI. miraPitt County, North Carolina
Bladen County, North Carolina
An extinct genus of sawfish
Squalicorax
  • S. falcatus
  • S. kaupi
  • S. pristodontus
  • S. bassanii
Wayne County, North Carolina
Bladen County, North Carolina
Lenoir County, North Carolina
An anacorid shark
HybodusH. sp.Bladen County, North Carolina
Robeson County, North Carolina
Wayne County, North Carolina
A hybodontid shark
ScapanorhynchusS. texanusBladen County, North Carolina
Robeson County, North Carolina
Wayne County, North Carolina
Lenoir County, North Carolina
A type of goblin shark
AsteracanthusA. sp.Bladen County, North CarolinaA hybodontid shark
Brachyrhizodus
  • B. wichitaensis
  • B. mcnultyi
Bladen County, North CarolinaA prehistoric stingray
CretolamnaC. appendiculataWayne County, North Carolina
Bladen County, North Carolina
An otodontid Shark
CretodusCretodus sp.Wayne County, North CarolinaA cretoxyrhinid shark
CarchariasCarcharias sp.Bladen County, North CarolinaA genus of sand shark (sand tiger sharks)
OdontaspisOdontaspis sp.Bladen County, North CarolinaA type of sand shark

Dinosaurs

Ornithopods

An indeterminate hadrosauroid is known from Stokes Quarry.[3]

Ornithopods of the Tar Heel/Coachman Formation
GenusSpeciesLocationNotesImages
HadrosaurusH. foulkii Hadrosaurus can be found throughout Late Cretaceous Appalachia.
"Hadrosaurus""H." minorPhoebus Landing, North CarolinaA small or juvenile hadrosaur.
HypsibemaH.crassicauda Hypsibema was first discovered in North Carolina from Sampson County, 1869, and described by Edward Drinker Cope. It was measured to be 12-17 meters, making it one of the largest hadrosaurids.
LophorhothonL. sp.Phoebus Landing, North CarolinaLophorhothon was discovered in the Mooreville Chalk Formation, Alabama.

Theropods

Indeterminate theropods, ornithomimosaurs, and maniraptorans are known from Stokes Quarry.

Theropods of the Tar Heel/Coachman Formation
GenusSpeciesLocationNotesImages
AppalachiosaurusA. montgomeriensisStokes Quarry, South CarolinaA large eutyrannosaur.
cf. Coelosaurus[5] IndeterminatePhoebus Landing, North CarolinaAn intermediate Ornithomimosaur
Dromaeosaurine[6] IndeterminateSampson County, North CarolinaA large dromaeosaurid, larger than Saurornitholestes but smaller than Dakotaraptor.
DryptosauridaeIndeterminatePhoebus Landing, North CarolinaA large eutyrannosaur part of an early lineage related to Dryptosaurus.
Saurornitholestes[7] S. langstoni The first evidence of dromaeosaurids in Appalachia was uncovered through S. langstoni specimens found at Stokes Quarry and Burches Ferry.

Notes and References

  1. A ceratopsian dinosaur from the Late Cretaceous of eastern North America, and implications for dinosaur biogeography. 10.1016/j.cretres.2015.08.004. 2016. Longrich. Nicholas R.. Cretaceous Research. 57. 199–207. 2016CrRes..57..199L .
  2. https://collections.naturalsciences.org/ NCSM Paleontology Database
  3. Brownstein. Chase D.. 2018-02-08. The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia. Palaeontologia Electronica. en. 21. 1. 1–56. 10.26879/801. 1094-8074. free.
  4. Brownstein. Chase D.. 2018-04-05. Diversity of raptor dinosaurs in southeastern North America revealed by the first definite record from North Carolina. PeerJ Preprints. 10.7287/peerj.preprints.26829v1. en . free .
  5. https://digital.ncdcr.gov/digital/collection/p16062coll9/id/22621 Baird D., and Horner, J., 1979, "Cretaceous dinosaurs of North Carolina"
  6. Brownstein. Chase D.. 2018-12-01. A large dromaeosaurid from North Carolina. Cretaceous Research. en. 92. 1–7. 10.1016/j.cretres.2018.07.006. 2018CrRes..92....1B . 135459468. 0195-6671.
  7. Brownstein. Chase D.. 2018. The distinctive theropod assemblage of the Ellisdale site of New Jersey and its implications for North American dinosaur ecology and evolution during the Cretaceous. Journal of Paleontology. 92. 6. 1115–1129. 10.1017/jpa.2018.42. 2018JPal...92.1115B . 0022-3360. free.