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Lochriea

From Wikipedia, the free encyclopedia

Lochriea
Temporal range: Visean–Serpukhovian
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Infraphylum: Agnatha
Class: †Conodonta
Order: †Ozarkodinida
Superfamily: †Polygnathacea
Genus: †Lochriea
Scott, 1942[1]
Species[citation needed]
  • †Lochriea costata
  • †Lochriea commutata (P1 type element)
  • †Lochriea cruciformis
  • †Lochriea monocostata
  • †Lochriea montanaensis (M type element)
  • †Lochriea monocarinata[2]
  • †Lochriea mononodosa
  • †Lochriea multinodosa
  • †Lochriea nodosa
  • †Lochriea saharae
  • †Lochriea scotiaensis
  • †Lochriea senkenbergica
  • †Lochriea ziegleri

Lochriea is an extinct genus of conodonts.

Use in stratigraphy

[edit]

The Visean, the second age of the Mississippian, contains four conodont biozones, two of which are named after Lochriea species:

  • the zone of Lochriea nodosa
  • the zone of Gnathodus bilineatus
  • the zone of Lochriea commutata
  • the zone of Pseudognathodus homopunctatus

The Serpukhovian, the third or youngest age of the Mississippian, includes three conodont biozones, one of which is named after Lochriea species:

  • the zone of Gnathodus postbilineatus
  • the zone of Gnathodus bollandensis
  • the zone of Lochriea ziegleri

References

[edit]
  1. ↑ Scott, Harold W. (1942). "Conodont Assemblages from the Heath Formation, Montana". Journal of Paleontology. 16 (3): 293–300. JSTOR 1298905.
  2. ↑ Zhuravlev, Andrey V. (2024-11-21). "A new species, Lochriea monocarinata n. sp., and its position in the morphospace of the genus Lochriea Scott, 1942 (Conodonta, Mississippian)". Geodiversitas. 46 (18). doi:10.5252/geodiversitas2024v46a18. ISSN 1280-9659.
[edit]