After Carroll, 1988, Nelson, 1994, and Fierstine, 2001, 2005, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o †Blochiidae Bleeker, 1859
   |?-o †Aglyptorhynchus Casier, 1966; L. Eoc. Eu., U. Olig. NA. [10 sp.] [Scombroidei incertae sedis (Fierstine, 2005)]
   |  |-- †A. maxillaris Fierstine, 2001
   |  |-- †A. bruxelliensis (Leriche, 1926)
   |  |-- †A. columbianus Fierstine, 2005
   |  |-- †A. compressus (Leriche, 1936)
   |  |-- †A. denticulatus (Leriche, 1909) [Cylindracanthus (Glyptorhynchus) sulcatus Leriche, 1909]
   |  |-- †A. robustus (Leidy, 1860)
   |  |-- †A. sulcatus (Casier, 1946) [Glyptorhynchus sulcatus Casier, 1946]
   |  |-- †A. venablesi Casier, 1966
   |  |-- †A. parvulus (Marsh, 1870)
   |  `-- †A. casieri Nolf, 1970
   |--o †Cylindracanthus Leidy, 1856; Cret. [9 sp.]
   |  |-- †C. rectus (Agassiz)
   |  |-- †C. octocostatus Casier, 1946
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  `-- †C. sp.
   |--o †Congorhynchus Darteville & Casier, 1949; U. Cret. Eoc. WAf. [3 sp.]
   |  |-- †C. sp.
   |  |-- †C. sp.
   |  `-- †C. sp.
   |-- †Blochius longirostris Volta, 1796; U. Eoc. Eu.
   `--o †Hemirhabdorhynchus Casier, 1946; Eoc. Eu. WAf. [4 sp.]
      |-- †H. costatus (Leriche, 1926
      |-- †H. depressus Casier, 1946
      |-- †H. ypresiensis Casier, 1946
      `-- †H. sp.

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