ammonites
Mesolobus Dunbar and Condra 1932 (lamp shell)

Strophomenata - Productida - Rugosochonetidae

Synonym: Ussurichonetes [nomen nudum]

Full reference: C. O. Dunbar and G. E. Condra. 1932. Brachiopoda of the Pennsylvanian System in Nebraska. Geological Survey of Nebraska Bulletin, Second Series 5:1-377

Parent taxon: Capillomesolobinae according to A. Williams et al. 2000

Sister taxa: Capillomesolobus, Tenuichonetes

Subtaxa: Mesolobus inflata, Mesolobus mesoplicus, Mesolobus plicatiformis, Mesolobus striatus

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Ecology: stationary low-level epifaunal suspension feeder