Subfamily Metacrininae Klikushin, 1977 sensu Roux, 1981

More than two primibrachials, cryptosynarthry at IBr1 + 2, except Eometacrinus, always muscular synarthry at IIBr1 + 2. Included genera: Eometacrinus, Metacrinus, and Saracrinus . Paleocene–Recent, possibly since Late Cretaceous.