The Bashkirian, the oldest age of the Pennsylvanian (also known as Upper Carboniferous), contains six biozones based on conodont index fossils, two of which are named after Declinognathodus species:
the zone of Declinognathodus marginodosus,
the zone of Declinognathodus noduliferus.
The GSSP point is at Arrow Canyon, Nevada, USA, with the first appearance of Declinognathodus noduliferus sensu lato.
The base of the Moscovian, the second stage in the Pennsylvanian, is close to the first appearances of the conodonts Declinognathodus donetzianus Nemirovskaya, 1990 and Diplognathodus ellesmerensis Bender, 1980. The Moscovian can biostratigraphically be divided into five conodont biozones, one of which is named after a Declinognathodus species : the zone of Declinognathodus donetzianus. The GSSP candidate sections are the Ural mountains or in Naqing (Nashui), Luodian County, Guizhou, China.
References
^New Pennsylvanian Platform Conodonts from Southwestern United States. D. L. Dunn, Journal of Paleontology, Vol. 40, No. 6 (Nov., 1966), pages 1294-1303 (Stable URL)
Early evolution of Declinognathodus close to the Mid-Carboniferous Boundary interval in the Barcaliente type section (Spain). Javier Sanz-López and Silvia Blanco-Ferrera, Palaeontology, September 2013, Volume 56, Issue 5, pages 927–946, doi:10.1111/pala.12025
Conodont chronostratigraphical resolution and Declinognathodus evolution close to the Mid-Carboniferous Boundary in the Barcaliente Formation type section, NW Spain. Javier Sanz-López, Silvia Blanco-Ferrera and Luis C. Sánchez de Posada, Lethaia, October 2013, Volume 46, Issue 4, pages 438–453, doi:10.1111/let.12021
declinognathodus, extinct, genus, platform, conodonts, temporal, range, bashkirian, moscovian, preꞒ, nscientific, classificationkingdom, animaliaphylum, chordataclass, conodontagenus, dunn, 1966, species, bernesgae, donetzianus, inaequalis, intermedius, latera. Declinognathodus is an extinct genus of platform conodonts DeclinognathodusTemporal range Bashkirian Moscovian PreꞒ Ꞓ O S D C P T J K Pg NScientific classificationKingdom AnimaliaPhylum ChordataClass ConodontaGenus DeclinognathodusDunn 1966 1 Species Declinognathodus bernesgae Declinognathodus donetzianus Declinognathodus inaequalis Declinognathodus intermedius Declinognathodus lateralis Declinognathodus marginodosus Declinognathodus japonicus Declinognathodus noduliferus type Declinognathodus praenoduliferus Declinognathodus pseudolateralis Declinognathodus tuberculosusUse in stratigraphy EditThe Bashkirian the oldest age of the Pennsylvanian also known as Upper Carboniferous contains six biozones based on conodont index fossils two of which are named after Declinognathodus species the zone of Declinognathodus marginodosus the zone of Declinognathodus noduliferus The GSSP point is at Arrow Canyon Nevada USA with the first appearance of Declinognathodus noduliferus sensu lato The base of the Moscovian the second stage in the Pennsylvanian is close to the first appearances of the conodonts Declinognathodus donetzianus Nemirovskaya 1990 and Diplognathodus ellesmerensis Bender 1980 The Moscovian can biostratigraphically be divided into five conodont biozones one of which is named after a Declinognathodus species the zone of Declinognathodus donetzianus The GSSP candidate sections are the Ural mountains or in Naqing Nashui Luodian County Guizhou China References Edit New Pennsylvanian Platform Conodonts from Southwestern United States D L Dunn Journal of Paleontology Vol 40 No 6 Nov 1966 pages 1294 1303 Stable URL Early evolution of Declinognathodus close to the Mid Carboniferous Boundary interval in the Barcaliente type section Spain Javier Sanz Lopez and Silvia Blanco Ferrera Palaeontology September 2013 Volume 56 Issue 5 pages 927 946 doi 10 1111 pala 12025 Conodont chronostratigraphical resolution and Declinognathodus evolution close to the Mid Carboniferous Boundary in the Barcaliente Formation type section NW Spain Javier Sanz Lopez Silvia Blanco Ferrera and Luis C Sanchez de Posada Lethaia October 2013 Volume 46 Issue 4 pages 438 453 doi 10 1111 let 12021External links Edit Declinognathodus at the Encyclopedia of Life Declinognathodus Fossilworks Retrieved 9 July 2016 from the Paleobiology Database a href Template Cite web html title Template Cite web cite web a CS1 maint postscript link This article about a conodont is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Declinognathodus amp oldid 1101270491, wikipedia, wiki, book, books, library,
