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Phacopidella trisulcata
Taxonomy
Phacops trisulcata was named by Hall (1852).
It was recombined as Phacopidella trisulcata by Ulrich and Bassler (1923); it was corrected as Phacops trisulcatus by Brett (1999).
It was recombined as Phacopidella trisulcata by Ulrich and Bassler (1923); it was corrected as Phacops trisulcatus by Brett (1999).