Eoconodontus

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Eoconodontus
Temporal range: Furongian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: †Conodonta
Order: †Proconodontida
Family: †Cordylodontidae
Genus: †Eoconodontus
Miller, 1980[1]
Species
  • †Eoconodontus altus
  • †Eoconodontus notchpeakensis

Eoconodontus is an extinct genus of conodonts of the Late Cambrian. It is a two-elements (rounded and compressed) genus from the Proconodontus lineage.[1]

Use in stratigraphy

It is suggested that Eoconodontus notchpeakensis can be a marker of the Stage 10 of the Furongian the fourth and final series of the Cambrian.[2]

In 2006, a working group proposed the first appearance of

Cordylodus andresi. Currently the first appearance of E. notchpeakensis is favored by many authors because it is globally widespread and is independent of facies (known from continental rise to peritidal environments).[3]

The Eoconodontus notchpeakensis proposal would also incorporate a non-biostratigraphic marker to correlate the beginning of Stage 10 globally. A carbon isotope excursion (the HERB-event) occurs in the lower part of the E. notchpeakensis range.

References

  1. ^ a b Taxonomic revisions of some Upper Cambrian and Lower Ordovician Conodonts with comments on their Evolution. J. F. Miller, The University of Kansas Paleontological Contributions: Paper 99, 1980 (URL)
  2. doi:10.1016/j.annpal.2015.04.008
  3. doi:10.3140/bull.geosci.1251

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