Raymond Lindsay Ethington (born 1929) is an American paleontologist. He works in the Geology department at the University of Missouri in Columbia, Missouri
He was one of the Chief Panderers of the Pander Society, an informal organisation founded in 1967 for the promotion of the study of conodont palaeontology. In 1983, with John E. Repetski, he described the conodont genus Rossodus [1]
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In 2007, he received the Raymond C. Moore Medal awarded by the Society for Sedimentary Geology to persons who have made significant contributions in the field which have promoted the science of stratigraphy by research in paleontology and evolution and the use of fossils for interpretations of paleoecology.
Conodonts are an extinct group of eel-looking agnathan (jawless) vertebrates, classified in the class Conodonta. For many years, they were known only from fossils of their spiky oral elements, which are usually found in isolation and are now called conodont elements, while knowledge about soft tissues remains limited. A resilient group of prehistoric fish, conodonts existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Due to their cosmopolitan distribution, conodont elements are widely used as index fossils, fossils used to define and identify geological periods.
Heinz Christian Pander, also Christian Heinrich Pander was a Russian biologist and embryologist of Baltic German origin.
Richard John Aldridge was a British palaeontologist and academic, who was Bennett Professor of Geology at the University of Leicester.
The Pander Society is an informal organisation founded in 1967 for the promotion of the study of conodont palaeontology. It publishes an annual newsletter. Although there are regular meetings of the Pander Society, at the Annual Meeting of the Geological Society of America, at European Conodont Symposia, and elsewhere, any meeting of three or more "Panderers" is considered an official meeting of the "Pander Society". The society is headed by the Chief Panderer, currently Maria Cristina Perri of the Università di Bologna. The society confers two awards, the Pander Medal for a lifetime of achievement in conodont palaeontology, and the Hinde Medal for an outstanding contribution to conodont palaeontology by a young Panderer.
Stage 10 of the Cambrian is the still unnamed third and final stage of the Furongian series. It follows the Jiangshanian and precedes the Ordovician Tremadocian Stage. The proposed lower boundary is the first appearance of the trilobite Lotagnostus americanus around 489.5 million years ago, but other fossils are also being discussed. The upper boundary is defined as the appearance of the conodont Iapetognathus fluctivagus which marks the beginning of the Tremadocian and is radiometrically dated as 485.4 million years ago.
Iapetognathus fluctivagus is a species of denticulate cordylodan conodonts belonging to the genus Iapetognathus. It existed during the Tremadocian Age of the Ordovician. It is an important index fossil in biostratigraphy.
The Bluestone Formation is a geologic formation in West Virginia. It is the youngest unit of the Upper Mississippian-age Mauch Chunk Group. A pronounced unconformity separates the upper boundary of the Bluestone Formation from sandstones of the overlying Pennsylvanian-age Pocahontas Formation.
The Collier Shale is a geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. Dating from the Late Cambrian to Early Ordovician periods, the Collier Shale is the oldest stratigraphic unit exposed in Arkansas. First described in 1892, this unit was not named until 1909 by Albert Homer Purdue in his study of the Ouachita Mountains of Arkansas. Purdue assigned the type locality to the headwaters of Collier Creek in Montgomery County, Arkansas, but did not designate a stratotype. As of 2017, a reference section for this unit has yet to be designated.
The Raymond C. Moore Medal for Paleontology is awarded by the Society for Sedimentary Geology to persons who have made significant contributions in the field which have promoted the science of stratigraphy by research in paleontology and evolution and the use of fossils for interpretations of paleoecology. The award is named after Professor Raymond C. Moore, the American paleontogist who helped to found the society.
Iapetognathus is a genus of cordylodan conodonts. It is one of the oldest denticulate euconodont genera known.
Edwin Bayer Branson was an American geologist and paleontologist. He was a professor of geology at the University of Missouri for 37 years.
Acodus is an extinct genus of conodonts.
Paraconodonts (Paraconodontida) are an extinct order of probable chordates, closely related or ancestral to euconodonts. The order contains the superfamily Furnishinacea, itself containing the families Westergaardodinidae and Furnishinidae.
Rossodus is an extinct genus of conodonts in the clade Prioniodontida, the "complex conodonts", of the Early Ordovician.
David L. Clark is a paleontologist. He was the W.H. Twenhofel Professor of Geology and Geophysics at the University of Wisconsin–Madison, Madison, Wisconsin.
Klaus Jürgen Müller was a German paleontologist.
Walter C. Sweet was an American paleontologist.
Stig M. Bergström is a Swedish-American paleontologist.
Iapetonudus is an extinct genus of conodonts.
Protoconodonts are an extinct group of Cambrian animals known from fossilized phosphatic tooth-like structures. They were originally described as an informal group of early conodonts, though more recent studies consider them to be more closely related to chaetognaths.
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