| Tauchen Formation | |
|---|---|
| Stratigraphic range: Langhian | |
| Type | Formation |
| Lithology | |
| Primary | Claystone |
| Location | |
| Region | Styria |
| Country |  Austria |
The Tauchen Formation is a geologic formation in Austria. It preserves fossils of Metaxytherium , dating back to the Langhian stage of the Miocene period. [1]
Halitherium is an extinct dugongid sea cow that arose in the late Eocene, then became extinct during the early Oligocene. Its fossils are common in European shales. Inside its flippers were finger bones that did not stick out. Halitherium also had the remnants of back legs, which did not show externally. However, it did have a basic femur, joined to a reduced pelvis. Halitherium also had elongated ribs, presumably to increase lung capacity to provide fine control of buoyancy. A 2014 review presented the opinion that the genus is dubious.
Desmostylus is an extinct genus of herbivorous mammal of the family Desmostylidae living from the Chattian stage of the Late Oligocene subepoch through the Late Miocene subepoch and in existence for approximately 21.2 million years.
Metaxytherium is an extinct genus of dugong that lived from the Oligocene until the end of the Pliocene. Fossil remains have been found in Africa, Europe, North America and South America. Generally marine seagrass specialists, they inhabited the warm and shallow waters of the Paratethys, Mediterranean, Caribbean Sea and Pacific coastline. American species of Metaxytherium are considered to be ancestral to the North Pacific family Hydrodamalinae, which includes the giant Steller's Sea Cow.
The Gadsden County paleontological sites are assemblages of Early Miocene invertebrates and vertebrates occurring in Gadsden County, Florida, United States.
The Hawthorn Group is a stratigraphic unit that includes several geologic formations of Late Oligocene to Pliocene age in North Florida, United States. It is known for its phosphate rock resources, and for its rich assemblages of Neogene vertebrate fossils. It was originally called the Waldo Formation by L.C. Johnson of the United States Geological Survey in 1887, and later became the Hawthorne Group named for Hawthorne, Florida, where its phosphate-rich rock was quarried and processed for use as fertilizer.
The Polk County paleontological sites are assemblages of Early Miocene to Late Pleistocene vertebrates occurring in Polk County, Florida, United States.
Hemipristis serra is an extinct species of weasel shark which existed during the Miocene epoch. It was described by Louis Agassiz in 1843. While today's snaggletooth shark is not very large or dangerous, Hemipristis serra, which lived in the Atlantic Ocean during the Oligocene and Miocene, was considerably larger than its modern-day relative and had much larger teeth. Its total length is estimated to be 6 metres (20 ft). Marks made by the teeth of H. serra are often found on the bones of the dugong Metaxytherium leading some scientists to hypothesize that H. serra specialized in preying on these sirenians. In the Gatun Formation of Panama, H. serra was contemporary with pups of the large lamniform shark Otodus megalodon, and both it and the great hammerhead are theorized to have preyed on the pups of this larger shark due to their presence within the formation.
The Parachucla Formation is a geologic formation in Florida. It preserves fossils dating back to the Paleogene period.
The Alachua Formation is a Miocene geologic formation in Florida. The claystones, sandstones and phosphorites of the formation preserve many fossils of mammals, birds, reptiles and fish, among others megalodon.
The Güines Formation is a geologic formation in Cuba. It preserves fossils dating back to the Early to Middle Miocene period. Among others, fossils of the prehistoric dugong, Metaxytherium were found in the formation.
The Lagunitas Formation is a geologic formation in Cuba. The open marine, fluvio-deltaic and lagoonal claystones, limestones and conglomerates preserve fossils dating back to the Early Miocene period. Among others, the fossil primate Paralouatta marianae, the largest primate of the Miocene New World, was found in the formation. Based on microfossils, the age has been determined as Burdigalian.
The Retz Formation is a geologic formation in Austria. It preserves fossils of Metaxytherium krahuletzi, dating back to the Burdigalian stage of the Miocene period.
The Skalica Formation is a geologic formation in Austria. It preserves fossils dating back to the Serravallian stage (Sarmatian) of the Miocene period.
The Grund Formation is a geologic formation in Austria. It preserves fossils dated to the Langhian age of the Miocene period.
The Leitha Limestone is a geologic formation in Austria, Czech Republic, Hungary and Poland. It preserves fossils dated to the Middle to Late Miocene period.
The Weissenegg Formation is a geologic formation in Austria. It preserves fossils dating back to the Miocene period.
Atocetus is an extinct genus of pontoporiid dolphin found in Miocene-age marine deposits in Peru and California.
Lentiarenium was an early sea cow from the Late Oligocene (Chattian) Linz-Melk Formation of Austria. Known since the mid 19th century, Lentiarenium was long considered to be a species of Halitherium until a 2016 analysis showed it to be distinct.
The Urumaco Formation is a formation in Venezuela that includes deposits from the Late Miocene. It is the site of several "giant forms": the turtles, crocodiles, sloths and rodents of Urumaco are among the largest of their groups.
Bharatisiren is an extinct genus of mammal which existed in what is now India during the early Miocene (Aquitanian) period.
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