Polygnathus

Polygnathus is an extinct genus of conodonts.

Species

 * †Polygnathus acrinodosus Aboussalam 2003
 * †Polygnathus alkhovikovae Baranov, Slavík & Blodgett 2014
 * †Polygnathus angustipennatus Bischoff and Ziegler 1957
 * †Polygnathus aragonensis Martínez-Pérez & Valenzuela-Ríos 2014
 * †Polygnathus arthuri Baranov, Slavík & Blodgett 2014
 * †Polygnathus bardashevi Baranov, Slavík & Blodgett 2014
 * †Polygnathus bicristatus Mossoni et al. 2015
 * †Polygnathus burretti Savage 2013
 * †Polygnathus chongqingensis Wang in Gong et al. 2012
 * †Polygnathus carlsi Martínez-Pérez & Valenzuela-Ríos 2014
 * †Polygnathus communis
 * †Polygnathus communis hanensis Savage 2013
 * †Polygnathus communis longanensis Qie et al. 2014
 * †Polygnathus communis namdipensis Savage 2013
 * †Polygnathus communis phaphaensis Savage 2013
 * †Polygnathus costatus Klapper 1971
 * †Polygnathus costatus partitus
 * †Polygnathus crassulus
 * †Polygnathus crassulus salapensis Savage 2013
 * †Polygnathus damelei Vodrazkova et al. 2011
 * †Polygnathus dujieensis Qie et al. 2014
 * †Polygnathus efimovae Kononova et al. 1996
 * †Polygnathus extralobatus phoensis Savage 2013
 * †Polygnathus hemiansatus
 * †Polygnathus hemipennatus Aboussalam 2003
 * †Polygnathus hojedki Gholamalian et al. 2013
 * †Polygnathus holynensis Vodrazkova et al. 2011
 * †Polygnathus housei Aboussalam 2003
 * †Polygnathus ivanowskyii Baranov, Slavík & Blodgett 2014
 * †Polygnathus karsteni Baranov, Slavík & Blodgett 2014
 * †Polygnathus kitabicus
 * †Polygnathus lezhoevi Baranov, Slavík & Blodgett 2014
 * †Polygnathus ilmenensis Zhuravlev 2003
 * †Polygnathus linguiformis Hinde
 * †Polygnathus michaelmurphyi Baranov, Slavík & Blodgett 2014
 * †Polygnathus nuragicus Mossoni et al. 2015
 * †Polygnathus pollocki Druce 1976
 * †Polygnathus postvogesi Plotitsyn & Zhuravlev 2017
 * †Polygnathus praeinversus Lu et al. 2018
 * †Polygnathus pseudocommunis Wang et al. 2016
 * †Polygnathus pseudocostatus Klapper & Vodrážková 2013
 * †Polygnathus ramoni Martínez-Pérez & Valenzuela-Ríos 2014
 * †Polygnathus robertensis Vodrazkova et al. 2011
 * †Polygnathus rossicus Zhuravlev 2000
 * †Polygnathus salixensis Vodrazkova et al. 2011
 * †Polygnathus settedabanicus Baranov, Slavík & Blodgett 2014
 * †Polygnathus sharyuensis Ovnatanova et al. 2019
 * †Polygnathus varcus Stauffer 1940
 * †Polygnathus wapanuckensis Harlton 1933
 * †Polygnathus yakutensis Baranov, Slavík & Blodgett 2014

Use in stratigraphy
The Tournaisian, the oldest age of the Mississippian (also known as Lower Carboniferous), contains eight conodont biozones, one of which is defined by a Polygnathus species:
 * the zone of Gnathodus pseudosemiglaber and Scaliognathus anchoralis
 * the zone of Gnathodus semiglaber and Polygnathus communis
 * the zone of Dollymae bouckaerti
 * the zone of Gnathodus typicus and Siphonodella isosticha
 * the zone of Siphonodella quadruplicata and Patrognathus andersoni (upper zone of Patrognathus andersoni)
 * the lower zone of Patrognathus andersoni
 * the zone of Patrognathus variabilis
 * the zone of Patrognathus crassus