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Reconstructions of various Russian species of the Ordovician trilobite Asaphus, including the species A. broggeri, A. punctuatus, A. intermedius, A. cornutus, A. lamanskii, A. kowalewskii, and Nileus armadillo.

Reconstructions of various Russian species of the Ordovician trilobite Asaphus, including the species A. broggeri, A. punctuatus, A. intermedius, A. cornutus, A. lamanskii, A. kowalewskii, and Nileus armadillo.
Artist credit: Stanton F. Fink