Conodont Fauna of the Machari Formation (Middle and Upper Cambrian), Yeongweol Area, Gangweon Province, Korea

Authors

  • Byung-Su Lee Department of Earth Science Education, Chonbuk National University, Jeonju 561–756
  • Yong Il Lee School of Earth and Environmental Sciences, Seoul National University, 151–742
  • James F. Miller Department of Geography, Geology, and Planning, Missouri State University, Springfield, Missouri 65897
  • Heong Jeong Korea National Oil Corporation, 1588–14 Gwanyang-dong, Dong-gu, Anyang 431–711

Abstract

Abstract. A diverse conodont fauna from the Machari Formation in the Yeongweol area of Gangweon (formerly Kangweon) Province, Korea, includes protoconodonts, paraconodonts, and euconodonts. Protoconodonts (assigned to Phylum Chaetognatha Leuckart and to Order Protoconodontida Landing) include Gapparodus Abaimova, Gumella Müller and Hinz, Hertzina Müller, and Phakelodus Miller. Paraconodonts (assigned to Phylum Chordata Bateson, to Superclass Conodonta Pander, and to Class Paraconodontida Müller) include species of Furnishina Müller, Muellerodus Miller, Proacodus Müller, Proacontiodus An, Prooneotodus Müller and Nogami, Prosagittodontus Müller and Nogami, and Westergaardodina Müller. Euconodonts (assigned to Phylum Chordata, to Superclass Conodonta Pander, and to Class Conodonti Branson) include species of Cambrooistodus Miller, Coelocerodontus Ethington, Granatodontus Chen and Gong, Proconodontus Miller, and Teridontus Miller. Upper Middle Cambrian occurrences of Coelocerodontus and Granatodontus are some of the oldest occurrences of euconodonts. Seventeen species referable to eight genera are reported for the first time from the Middle to Upper Cambrian of Korea. These include the protoconodonts Gapparodus n. sp. A and Gumella cuneata Müller and Hinz and the paraconodonts Furnishina bicarinata Müller, F. curvata Müller and Hinz, F. gossmannae Müller and Hinz, F. ovata Müller and Hinz, F. pernica An, F. polonica Szaniawski, F. tortilis (Müller), F. vasmerae Müller and Hinz, Muellerodus? erectus (Xiang in An et al.), Prosagittodontus minimus Müller and Hinz, Westergaardodina nogamii Müller and Hinz, and W. quadrata An. Euconodonts recovered for the first time from the Machari Formation include Coelocerodontus bicostatus van Wamel, Granatodontus ani (Wang), and G. hwajeolensis (Lee and Lee). These taxa are illustrated and correlated herein with the equivalent local and global trilobite and conodont zonal schemes. Resumen. La formación Machari in el área Yeongweol de la provincia de Gangweon, Corea, contiene una fauna diversa de protoconodontes, paraconodontes y euconodontes. Los protoconodontes (correspondientes al filo Chaetognatha Leuckart y a la orden Protoconodontida Landing) incluyen Gapparodus Abaimova, Gumella Müller y Hinz, Hertzina Müller, y Phakelodus Miller. Paraconodontes (correspondientes al filo Chordata Bateson, a la superclase Conodonta Pander, y a la clase Paraconodontida Müller) incluyen las especies Furnishina Müller, Muellerodus Miller, Proacodus Müller, Proacontiodus An, Prooneotodus Müller y Nogami, Prosagittodontus Müller y Nogami, y Westergaardodina Müller. Euconodontes (correspondientes al filo Chordata, la superclase Conodonta Pander, y a la clase Conodonti Branson) incluyen las especies Cambrooistodus Miller, Coelocerodontus Ethington, Granatodontus Chen y Gong, Proconodontus Miller, y Teridontus Miller. La presencia de Coelocerodontus y Granatodontus en el Cámbrico Medio corresponde a une de las mas antiguas occurrencias de euconodontes. Diecisiete especies pertenecientes a ocho géneros se reportan aquí por primera vez para el Cámbrico Medio y Cámbrico Superior de Corea. Estos incluyen los protoconodontes Gapparodus n. sp. A y Gumella cuneata Müller y Hinz, y los paraconodontes Furnishina bicarinata Müller, F. curvata Müller y Hinz, F. gossmannae Müller y Hinz, F. ovata Müller y Hinz, F. pernica An, F. polonica Szaniawski, F. tortilis (Müller), F. vasmerae Müller y Hinz, Muellerodus? erectus (Xiang en An et al.), Prosagittodontus minimus Müller y Hinz, Westergaardodina nogamii Müller y Hinz, y W. quadrata An. Euconodontes encontrados por vez primera en la formación Machari incluyen Coelocerodontus bicostatus van Wamel, Granatodontus ani (Wang), and G. hwajeolensis (Lee and Lee). Se anexa su ilustración y su correlación con los esquemas zonales de trilobites y conodontes a escala local y global.

Author Biographies

  • Byung-Su Lee, Department of Earth Science Education, Chonbuk National University, Jeonju 561–756
    Professor of Geology
  • Yong Il Lee, School of Earth and Environmental Sciences, Seoul National University, 151–742
    Professor of Geology
  • James F. Miller, Department of Geography, Geology, and Planning, Missouri State University, Springfield, Missouri 65897
    Emeritus Professor of Geology
  • Heong Jeong, Korea National Oil Corporation, 1588–14 Gwanyang-dong, Dong-gu, Anyang 431–711
    Petroleum Geologist

Published

2009-08-08

Issue

Section

Articles

How to Cite

Conodont Fauna of the Machari Formation (Middle and Upper Cambrian), Yeongweol Area, Gangweon Province, Korea. (2009). Ameghiniana, 46(2), 407-430. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/61