''Siphonodella'' is an extinct genus of conodonts. ''Siphonodella banraiensis'' is from the Late Devonian of Thailand. ''Siphonodella nandongensis'' is from the Early Carboniferous of the Baping Formation in China.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

Use in stratigraphy

The

Tournaisian The Tournaisian is in the ICS geologic timescale the lowest stage or oldest age of the Mississippian, the oldest subsystem of the Carboniferous. The Tournaisian age lasted from Ma to Ma. It is preceded by the Famennian (the uppermost stage ...

, the oldest age of the Mississippian (also known as Lower Carboniferous) contains eight conodont biozones, two of which are characterized by ''Siphonodella'' species: * the zone of ''

Gnathodus typicus ''Gnathodus'' is an extinct conodont genus in the family Idiognathodontidae. Use in stratigraphy The Tournaisian, the oldest age of the Mississippian (also known as Lower Carboniferous), contains eight conodont biozones, 3 of which are defi ...

'' and ''Siphonodella isosticha'' * the zone of ''Siphonodella quadruplicata'' and ''

Patrognathus andersoni ''Patrognathus'' is an extinct genus of conodonts. Use in stratigraphy The Tournaisian The Tournaisian is in the ICS geologic timescale the lowest stage or oldest age of the Mississippian, the oldest subsystem of the Carboniferous. The T ...

'' (upper zone of ''Patrognathus andersoni'') The

GSSP Golden Spike A Global Boundary Stratotype Section and Point (GSSP) is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundary of a stage on the geologic time scale. The effort to define GSSPs is conducted by ...

for the

is in

La Serre La Serre (; oc, La Sèrra) is a commune in the Aveyron department in southern France. Population The GSSP Golden Spike for the Tournaisian is in La Serre, with the first appearance of the conodont '' Siphonodella sulcata''. In 2006 it wa ...

, Montagne Noire, France with the first appearance of ''Siphonodella sulcata''. In 2006 it was discovered that this GSSP has biostratigraphic problems.

References

External links

* * Conodont genera Carboniferous conodonts Devonian conodonts Tournaisian life Late Devonian first appearances Late Devonian animals Mississippian extinctions {{conodont-stub