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Conodonts are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements found in isolation and now called conodont elements. Knowledge about soft tissues remains limited. They existed in the worlds oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. The animals are also called Conodontophora to avoid ambiguity.
The Emsian is one of three faunal stages in the Early Devonian Epoch. It lasted from 407.6 ± 2.6 million years ago to 393.3 ± 1.2 million years ago. It was preceded by the Pragian Stage and followed by the Eifelian Stage. It is named after the Ems river in Germany. The GSSP is located in the Zinzil'ban Gorge in the Kitab State Geological Reserve of Uzbekistan, 35 centimetres (14 in) above the contact with the Madmon Formation.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2002.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 1984.
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.
Carden Crea Wallace is an Australian scientist who was the curator/director of the Museum of Tropical Queensland from 1987 to 2003. She is an expert on corals having written a "revision of the Genus Acropora". Wallace was part of a team that discovered mass spawning of coral in 1984.
Maurits Lindström was a Swedish geologist and paleontologist. Lindströms initial work was divided among two topics conodont paleontology and the structural geology of the Scandinavian Caledonides in Lappland.
Alternognathus is an extinct conodont genus in the family Elictognathidae. An extensive study on its population dynamics and lifespan has recently been published.
Metapolygnathus is an extinct genus of platform conodonts.
Klaus Jürgen Müller was a German paleontologist.
Stig M. Bergström is a Swedish-American paleontologist.
William Madison Furnish was an American paleontologist. He taught at the University of Iowa.
Eolinguipolygnathus is an extinct genus of conodont from the Early Devonian (Emsian).
Raymond (Ray) Lindsay Ethington is an American paleontologist. He works in the Geology department at the University of Missouri in Columbia, Missouri
Muellerilepis is an extinct genus of conodonts.
Baltoniodus is an extinct genus of conodonts.
Microzarkodina is an extinct genus of conodonts mainly from the Middle Ordovician of Baltoscandia. The Microzarkodina apparatus probably consisted of 15 or 17 elements: four P, two or four M and nine S elements. The S elements include different Sa, Sb1, Sb2, and Sc element types.
Neospathodus is an extinct genus of conodonts.
Gilbert Klapper is a paleontologist.
References
- ↑ The phylomorphogenesis of some Early Devonian platform conodonts. IA Bardashev, K Weddige and W Ziegler, Senckenbergiana lethaea, December 2002, volume 82, issue 2, pages 375-451, doi : 10.1007/BF03042946
- Willi Ziegler 13. März 1929 – 8. August 2002. Karsten Weddige, Paläontologische Zeitschrift, April 2003, Volume 77, Issue 1, pages 1–21, doi : 10.1007/BF03004557 (article in German)
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