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Chandler Bridge Formation
The Chandler Bridge Formation is a Formation (geology), geologic formation in South Carolina. It preserves fossils dating back to the Chattian (Late Oligocene) of the Paleogene Period (geology), period, corresponding to the Arikareean in the North American land mammal age, NALMA classification.Chandler Bridge Formation at Fossilworks.org The formation overlies the Ashley Formation and is overlain by the Edisto Formation.Albright et al., 2019, p.84 Vertebrate paleofauna Mammals Reptiles Fish See also * List of fossiliferous stratigraphic units in South ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echovenator
''Echovenator'' ("echolocation hunter") is a genus of primitive odontocete from late Oligocene (Chattian) marine deposits in South Carolina belonging to Xenorophidae. Description and paleobiology ''Echovenator'' is distinguishable from other xenorophids in having a paranaris fossa Fossa may refer to: Animals * Fossa (animal), the common name of a carnivoran mammal of genus ''Cryptoprocta'' endemic to Madagascar * ''Fossa'', the Latin genus name of the Malagasy civet, a related but smaller mammal endemic to Madagascar Pla ... and fused fronto-nasal and maxillo-premaxillary sutures. The earbone structure shows that this odontocete was clearly capable of echolocation.. References Oligocene cetaceans Fossil taxa described in 2016 {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenorophidae
Xenorophidae is an extinct family of odontocetes currently known from the Oligocene of the southeastern US. Known genera of xenorophids include ''Albertocetus'', '' Archaeodelphis'', '' Xenorophus'', '' Cotylocara'', ''Echovenator'', and ''Inermorostrum ''Inermorostrum'' is a genus of primitive odontocete from early Oligocene (Rupelian) marine deposits in South Carolina belonging to the family Xenorophidae Xenorophidae is an extinct family of odontocetes currently known from the Oligocene of ...''.. References Prehistoric toothed whales Prehistoric mammal families Oligocene cetaceans {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotylocara
''Cotylocara'' is a genus of primitive odontocete from late Oligocene (Chattian) marine deposits of the Chandler Bridge Formation of South Carolina belonging to Xenorophidae Xenorophidae is an extinct family of odontocetes currently known from the Oligocene of the southeastern US. Known genera of xenorophids include ''Albertocetus'', '' Archaeodelphis'', '' Xenorophus'', '' Cotylocara'', ''Echovenator'', and ''Inerm .... Paleobiology ''Cotylocara'' was capable of echolocation like modern dolphins, as evidenced by its dense, thick and downturned rostrum, air sac fossae, cranial asymmetry, and exceptionally broad maxillae.Jonathan H. Geisler, Matthew W. Colbert, James L. Carew., 2014: ''A new fossil species supports an early origin for toothed whale echolocation.'' ''Nature''. doi:10.1038/nature13086 References Oligocene cetaceans Fossil taxa described in 2014 {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ankylorhiza Tiedemani Life Reconstruction By PaleoGeek
''Ankylorhiza'' (meaning "fused roots"; in reference to the type of dentition seen in early toothed whales) is an extinct genus of toothed whale that lived in what is now the United States during the Oligocene epoch, between 29 and 23.5 million years ago. The type and only known species is ''A. tiedemani'', though two fossil skeletons may represent an additional, second species within the genus. ''Ankylorhiza'' was about long, with a long, robust skull bearing conical teeth that were angled forwards at the tip of the snout. ''Ankylorhiza'' is the largest known Oligocene toothed whale and is one of the most completely known early members of this group, with characteristics intermediate between basal and derived cetaceans. The taxon would have had powerful jaw musculature and probably fed on large prey by seizing it and puncturing it with its robust teeth. The animal likely occupied a fast-swimming predator niche similar to that of living orcas. Discovery and naming The holo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgrade Formation
The Belgrade Formation is a limestone geologic formation in North Carolina characterized by limestone coquina mixed with sand, and thinly laminated clays. It preserves fossils dating back to the Paleogene period. Description The Belgrade Formation is composed of two subunits: the Pollocksville member and the Haywood Landing member. The Pollocksville member is composed of unconsolidated oyster shells and sand. It was deposited in the Oligocene and early Miocene. The Haywood Landing member is composed of shelly sands and thinly laminated clays. The Belgrade Formation was originally considered part of an Eocene formation called the Trent Marl before it was identified as being deposited in the Miocene and split off. Fossil content Mammals Reptiles Fish Invertebrates See also * List of fossiliferous stratigraphic units in North Carolina This article contains a list of fossil-bearing stratigraphic units in the state of North Carolina, U.S. Sites See also * Pale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ankylorhiza
''Ankylorhiza'' (meaning "fused roots"; in reference to the type of dentition seen in early toothed whales) is an extinct genus of toothed whale that lived in what is now the United States during the Oligocene epoch, between 29 and 23.5 million years ago. The type and only known species is ''A. tiedemani'', though two fossil skeletons may represent an additional, second species within the genus. ''Ankylorhiza'' was about long, with a long, robust skull bearing conical teeth that were angled forwards at the tip of the snout. ''Ankylorhiza'' is the largest known Oligocene toothed whale and is one of the most completely known early members of this group, with characteristics intermediate between basal and derived cetaceans. The taxon would have had powerful jaw musculature and probably fed on large prey by seizing it and puncturing it with its robust teeth. The animal likely occupied a fast-swimming predator niche similar to that of living orcas. Discovery and naming The holot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agorophius Pygmaeus
''Agorophius'' is an extinct genus of toothed whale that lived during the Oligocene period, approximately , in the waters off what is now South Carolina. Taxonomy The holotype of ''Agorophius pygmaeus'', MCZ 8761, was first mentioned in an 1848 report on the geology of South Carolina by Michael Tuomey. It was eventually described as ''Zeuglodon pygmaeus'' by Johannes Peter Müller in 1849. Louis Agassiz coined the name ''Phocodon holmesii'' for the same specimen, classifying it as an odontocete. Later authors considered ''Zeuglodon pygmaeus'' a species of either '' Dorudon'' or '' Squalodon'', and in 1895 Edward Drinker Cope eventually recognized it as being a distinct genus, which he named ''Agorophius''. Although the skull is lost and the tooth is the only extant part of MCZ 8761, Fordyce (1981) was able to diagnose ''Agorophius'' based on existing descriptions of the skull by Muller, Cope, and Agassiz.R. E. Fordyce. 1981. Systematics of the odontocete whale Agorophius pygmaeus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontocete
The toothed whales (also called odontocetes, systematic name Odontoceti) are a parvorder of cetaceans that includes dolphins, porpoises, and all other whales possessing teeth, such as the beaked whales and sperm whales. Seventy-three species of toothed whales are described. They are one of two living groups of cetaceans, the other being the baleen whales (Mysticeti), which have baleen instead of teeth. The two groups are thought to have diverged around 34 million years ago (mya). Toothed whales range in size from the and vaquita to the and sperm whale. Several species of odontocetes exhibit sexual dimorphism, in that there are size or other morphological differences between females and males. They have streamlined bodies and two limbs that are modified into flippers. Some can travel at up to 20 knots. Odontocetes have conical teeth designed for catching fish or squid. They have well-developed hearing, that is well adapted for both air and water, so much so that some can sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agorophius
''Agorophius'' is an extinct genus of toothed whale that lived during the Oligocene period, approximately , in the waters off what is now South Carolina. Taxonomy The holotype of ''Agorophius pygmaeus'', MCZ 8761, was first mentioned in an 1848 report on the geology of South Carolina by Michael Tuomey. It was eventually described as ''Zeuglodon pygmaeus'' by Johannes Peter Müller in 1849. Louis Agassiz coined the name ''Phocodon holmesii'' for the same specimen, classifying it as an odontocete. Later authors considered ''Zeuglodon pygmaeus'' a species of either ''Dorudon'' or ''Squalodon'', and in 1895 Edward Drinker Cope eventually recognized it as being a distinct genus, which he named ''Agorophius''. Although the skull is lost and the tooth is the only extant part of MCZ 8761, Fordyce (1981) was able to diagnose ''Agorophius'' based on existing descriptions of the skull by Muller, Cope, and Agassiz.R. E. Fordyce. 1981. Systematics of the odontocete whale Agorophius pygmaeus a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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