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Table 1 Conditions of the six main morphological features discussed in the text for all genera of fossil and extant Acanthuridae and their two immediate outgroup families

From: A new genus and species of surgeon fish (Perciformes, Acanthuridae) from the Oligocene of Kanton Glarus, Switzerland

  1. FP, fixed plates; SS, folding scalpel spine; N, none; p, probably; ?, unknown; −, absent; +, present