Histological Analysis of Ischyrhiza mira Rostral Spines

Abstract: Three taxa have independently evolved an elongated rostrum lined with rostral spines, the extant pristiophorids (sawsharks) and pristids (sawfishes) and the sclerorhynchoids (extinct sawfishes). Ischyrhiza mira is a common sclerorhynchoid found in Cretaceous...
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