- 15298/rusentj.29.2.14. Adrain, J. M.; Chatterton, B.D.E. (1996). "The
Otarionine Trilobite Cyphaspis, with New
Species from the
Silurian of Northwestern...
- &
Vaccari Early Devonian (Pragian)
Talacasto Formation Argentina An
otarionine aulacopleurid, a
species of Maurotarion.
Megagraulos similis Sp. nov Valid...
- ISSN 0022-3360. S2CID 189993633. Adrain,
Jonathan M. (July 1996). "A new
otarionine trilobite from the
Henryhouse Formation (Silurian, Ludlow) of Oklahoma"...
-
Valid Van
Viersen &
Prescher Middle Devonian Ahbach Formation Germany An
otarionine aulacopleurid, a
species of Cyphaspis.
Cyphaspis rommersheimensis Sp....
- 20341/gb.2016.008. Adrain,
Jonathan M.; Chatterton,
Brian D.E. (1996). "The
Otarionine Trilobite Cyphaspis, with New
Species from the
Silurian of Northwestern...
