Siphonodella

Siphonodella Temporal range: Late Devonian–Tournaisian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
Genus:	†Siphonodella Branson and Mehl 1944[1]
Species
†Siphonodella banraiensis †Siphonodella duplicata (type) †Siphonodella isosticha †Siphonodella nandongensis †Siphonodella quadruplicata †Siphonodella sulcata †Siphonodella uralica

Siphonodella is an extinct genus of conodonts.

Siphonodella banraiensis is from the Late Devonian of Thailand.^[2] Siphonodella nandongensis is from the Early Carboniferous of the Baping Formation in China.^[3]

Use in stratigraphy

The Tournaisian, the oldest age of the Mississipian (also known as Lower Carboniferous) contains eight conodont biozones, two of which are characterized by Siphonodella species:

• the zone of Gnathodus typicus and Siphonodella isosticha
• the zone of Siphonodella quadruplicata and Patrognathus andersoni (upper zone of Patrognathus andersoni)

The GSSP Golden Spike for the Tournaisian is in La Serre, Montagne Noire, France with the first appearance of Siphonodella sulcata. In 2006 it was discovered that this GSSP has biostratigraphic problems.

References

1. Conodonts. EB Branson and MG Mehl, in HW Shimer and RR Shrock, Index Fossils of North America. 1944
2. Late Devonian conodonts from northwestern Thailand. Norman M. Savage (2013). Bourland Printing / Trinity Press. pages 1–48, ISBN 978-0-578-11919-9
3. New material of the Early Carboniferous conodonts from the lower member of the Baping Formation in Nandong, Guangxi, China. Zhihong Li, Zhongqin Peng, Long Cheng, Chuanshang Wang and Baozhong Wang, Acta Micropalaeontologica Sinica, 2014, volume 31, issue 3, pages 271–284

External links

• Siphonodella at the Encyclopedia of Life
• Siphonodella at fossilworks.org (retrieved 4 July 2016)