Lochriea Explained

Lochriea is an extinct genus of conodonts.

Use in stratigraphy

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