Doguzhaeva, Larisa A.; Mapes, Royal H.; Mutvei, Harry (2002). "Shell morphology and ultrastructure of the Early Carboniferous coleoid Hematites Flower & Gordon, 1959 (Hematitida ord. nov.) from Midcontinent (USA)". Abhandlungen der Geologischen Bundesanstalt. 57: 299–320'. ISBN3-85316-014-X.ISSN0016-7800.
Nishiguchi, Michelle; Mapes, Royal K. (2008), "Cephalopoda", in Ponder, Winston F., & Lindberg, David R. (eds.), Phylogeny and evolution of the Mollusca, Dordrecht, The Netherlands: Springer, pp. 163–199, ISBN[永久失效連結]978-0-520-25092-5[永久失效連結]
Doguzhaeva, Larisa A.; Mapes, Royal H.; Mutvei, Harry (2002). "Shell morphology and ultrastructure of the Early Carboniferous coleoid Hematites Flower & Gordon, 1959 (Hematitida ord. nov.) from Midcontinent (USA)". Abhandlungen der Geologischen Bundesanstalt. 57: 299–320'. ISBN[永久失效連結]3-85316-014-X[永久失效連結].ISSN[永久失效連結]0016-7800.
worldcat.org
Doguzhaeva, Larisa A.; Mapes, Royal H.; Mutvei, Harry (2002). "Shell morphology and ultrastructure of the Early Carboniferous coleoid Hematites Flower & Gordon, 1959 (Hematitida ord. nov.) from Midcontinent (USA)". Abhandlungen der Geologischen Bundesanstalt. 57: 299–320'. ISBN3-85316-014-X.ISSN0016-7800.
Doguzhaeva, Larisa A.; Mapes, Royal H.; Mutvei, Harry (2002). "Shell morphology and ultrastructure of the Early Carboniferous coleoid Hematites Flower & Gordon, 1959 (Hematitida ord. nov.) from Midcontinent (USA)". Abhandlungen der Geologischen Bundesanstalt. 57: 299–320'. ISBN[永久失效連結]3-85316-014-X[永久失效連結].ISSN[永久失效連結]0016-7800.