| Tar Heel/Coachman Formation | |
|---|---|
| Stratigraphic range: Campanian ~ | |
| Type | Formation |
| Unit of | Black Creek Group |
| Underlies | Bladen Formation |
| Location | |
| Region | |
| Country |  United States |
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]
An indeterminate hadrosauroid is known from Stokes Quarry. [3]
| Ornithopods of the Tar Heel/Coachman Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Notes | Images | ||
| H. foulkii | Hadrosaurus can be found throughout Late Cretaceous Appalachia. [3] |  | ||||
| " Hadrosaurus" | "H." minor | Phoebus Landing, North Carolina | A small or juvenile hadrosaur. [3] | |||
| H.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. |  | ||||
| L. sp. | Phoebus Landing, North Carolina | Lophorhothon was discovered in the Mooreville Chalk Formation, Alabama. | ||||
| Ceratopsids of the Tar Heel/Coachman Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Notes | Images | ||
| Indeterminate | Sampson County, North Carolina | In 2016, a left maxilla was found of a dinosaur from the Leptoceratopsidae, of an unknown genus. | ||||
Indeterminate theropods, ornithomimosaurs, and maniraptorans are known from Stokes Quarry. [3]
| Theropods of the Tar Heel/Coachman Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Notes | Images | ||
| Appalachiosaurus [3] | A. montgomeriensis | Stokes Quarry, South Carolina | A large eutyrannosaur. |  | ||
| cf. Coelosaurus [5] | Indeterminate | Phoebus Landing, North Carolina | An intermediate Ornithomimosaur | |||
| Dromaeosaurine [6] | Indeterminate | Sampson County, North Carolina | A large dromaeosaurid, larger than Saurornitholestes but smaller than Dakotaraptor. | |||
| Dryptosauridae [3] | Indeterminate | Phoebus Landing, North Carolina | A large eutyrannosaur part of an early lineage related to Dryptosaurus. |  | ||
| S. langstoni |
| The first evidence of dromaeosaurids in Appalachia was uncovered through S. langstoni specimens found at Stokes Quarry and Burches Ferry. [3] |  | |||
Tyrannosauroidea is a superfamily of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives. Tyrannosauroids lived on the Laurasian supercontinent beginning in the Jurassic Period. By the end of the Cretaceous Period, tyrannosauroids were the dominant large predators in the Northern Hemisphere, culminating in the gigantic Tyrannosaurus. Fossils of tyrannosauroids have been recovered on what are now the continents of North America, Europe and Asia, with fragmentary remains possibly attributable to tyrannosaurs also known from South America and Australia.
Dryptosaurus is a genus of basal eotyrannosaurian theropod dinosaur that lived on the island continent of Appalachia approximately 67 million years ago during the end of the Maastrichtian age of the Late Cretaceous period. Dryptosaurus was a large, bipedal, ground-dwelling carnivore that could grow up to 7.5 metres (25 ft) long and weigh up to 756–1,500 kilograms (1,667–3,307 lb). Although it is now largely unknown outside of academic circles, the famous 1897 painting of the genus by Charles R. Knight made Dryptosaurus one of the more widely known dinosaurs of its time, in spite of its poor fossil record. First described by Edward Drinker Cope in 1866 and later renamed by Othniel Charles Marsh in 1877, Dryptosaurus is among the first theropod dinosaurs ever known to science.
"Coelosaurus" antiquus is a dubious species of theropod dinosaurs. It was named by Joseph Leidy in 1865 for two tibiae found in the Navesink Formation of New Jersey.
In paleontology, a chimera is a fossil that was reconstructed with elements coming from more than a single species or genus of animal. In other words, they are mistakes or sometimes hoaxes made by paleontologists, putting together parts that do not come from the same organism. A now classic example of chimera is Protoavis.
The Arundel Formation, also known as the Arundel Clay, is a clay-rich sedimentary rock formation, within the Potomac Group, found in Maryland of the United States of America. It is of Aptian age. This rock unit had been economically important as a source of iron ore, but is now more notable for its dinosaur fossils. It consists of clay lenses within depressions in the upper part of the Patuxent Formation that may represent oxbow swamp facies. It is named for Anne Arundel County, Maryland.
The Aguja Formation is a geological formation in North America, exposed in Texas, United States and Chihuahua and Coahuila in Mexico, whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. Fossil palms have also been unearthed here.
The Kem Kem Group is a geological group in the Kem Kem region of eastern Morocco, whose strata date back to the Cenomanian stage of the Late Cretaceous. Its strata are subdivided into two geological formations, with the lower Ifezouane Formation and the upper Aoufous Formation used for the strata on the eastern side of the Atlas Mountains (Tinghir), with the Gara Sbaa Formation and Douira Formation used in the southern Tafilalt region. It is exposed on an escarpment along the Algeria–Morocco border.
The Navesink Formation is a 66 to 70 mya greensand glauconitic marl and sand geological formation in New Jersey. It is known for its Cretaceous period fossil shell beds and dinosaur bones.
The Marshalltown Formation is a Mesozoic geologic formation. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.
During most of the Late Cretaceous the eastern half of North America formed Appalachia, an island land mass separated from Laramidia to the west by the Western Interior Seaway. This seaway had split North America into two massive landmasses due to a multitude of factors such as tectonism and sea-level fluctuations for nearly 40 million years. The seaway eventually expanded, divided across the Dakotas, and by the end of the Cretaceous, it retreated towards the Gulf of Mexico and the Hudson Bay. This left the island masses joined in the continent of North America as the Rocky Mountains rose. From the Cenomanian to the end of the Campanian ages of the Late Cretaceous, Appalachia was separated from the rest of North America. As the Western Interior Seaway retreated in the Maastrichtian, Laramidia and Appalachia eventually connected. Because of this, its fauna was isolated, and developed very differently from the tyrannosaur, ceratopsian, hadrosaurid, pachycephalosaur and ankylosaurid dominated fauna of the western part of North America, known as "Laramidia".
Zhuchengtyrannus is a genus of tyrannosaurid theropod dinosaur known from the Campanian stage of the Late Cretaceous of Shandong Province, China. It belongs to the subfamily Tyrannosaurinae, and contains a single species, Zhuchengtyrannus magnus.
The year 2017 in archosaur paleontology was eventful. Archosaurs include the only living dinosaur group — birds — and the reptile crocodilians, plus all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosaur palaeontology is the scientific study of those animals, especially as they existed before the Holocene Epoch began about 11,700 years ago. The year 2017 in paleontology included various significant developments regarding archosaurs.
This article records new taxa of fossil archosaurs of every kind that are scheduled described during the year 2020, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2020.
This article records new taxa of fossil archosaurs of every kind that are scheduled described during the year 2021, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2021.
The year 2018 in non-avian dinosaur paleontology was eventful. Archosaurs include the only living dinosaur group — birds — and the reptile crocodilians, plus all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosaur palaeontology is the scientific study of those animals, especially as they existed before the Holocene Epoch began about 11,700 years ago. This article records new taxa of fossil archosaurs of the non-avian variety that have been described during the year 2018, as well as other significant discoveries and events related to paleontology of archosaurs that occurred in the year 2018.
This article records new taxa of fossil archosaurs of every kind that are scheduled described during the year 2022, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2022.
