Type
Zone
Age range
233–231.4 Ma
Late Triassic
Carnian
Metapolygnathus nodosus
Metapolygnathus carpathicus
Metapolygnathus polygnathiformis
233.0232.9232.8232.7232.6232.5232.4232.3232.2232.1232.0231.9231.8231.7231.6231.5231.4