Menuites

Menuites portlocki, copyright James St. John.

Belongs within: Pachydiscidae.

Menuites is an Upper Cretaceous (Coniacian or Santonian to Upper Maastrichtian) genus of ammonites found virtually worldwide (Wright et al. 1996).

Characters (from Wright et al. 1996): Very inflated to rather compressed; moderately involute; smooth and constricted at first, then with umbilical bullae and fine, straight or slightly curved ribs. Macroconchs large; body chamber with ribs coarsening or disappearing. Microconchs small, with rounded umbilical and ventrolateral tubercles on outer whorl and with constricted, simple aperture.

<==Menuites Spath 1922 (see below for synonymy)WCH96
    |--*M. menu (Forbes 1846) [=Ammonites menu]WCH96
    |--‘Anapachydiscus’ arrialoorensisK79
    |--‘Anapachydiscus’ deccanensisK79
    |--M. fascicostatus (Yabe in Yabe & Shimizu 1921) (see below for synonymy)WCH96
    |--‘Anapachydiscus’ fresvillensisWCH96
    |--*Cobbanoscaphites’ menabensis Collignon 1969WCH96
    |--‘Pachydiscus’ naumanni Yokoyama 1890WCH96 [=Anapachydiscus (*Neopachydiscus) naumanniK79, WCH96]
    |--‘Pachydiscus’ patagonicus Paulcke 1907 [=*Hoepenites patagonicus]WCH96
    |--M. portlockiK79
    |--‘Kossmaticeras’ pseudorotalinus Collignon 1931 [=*Besaireites pseudorotalinus]WCH96
    |--‘Anapachydiscus’ sutneriK79
    |--‘Anapachydiscus’ terminusWCH96
    `--‘Anapachydiscus’ wittekindiK79

Menuites Spath 1922 [incl. Anapachydiscus Yabe & Shimizu 1926, Besaireites Collignon 1931, Cobbanoscaphites Collignon 1969, Hoepenites Collignon 1952, Neopachydiscus Yabe & Shimizu 1926]WCH96

Menuites fascicostatus (Yabe in Yabe & Shimizu 1921) [=Pachydiscus (Parapachydiscus) fascicostatus, *Anapachydiscus fascicostatus]WCH96

*Type species of generic name indicated

References

[K79] Kauffman, E. G. 1979. Cretaceous. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A418-A487. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[WCH96] Wright, C. W., J. H. Calloman & M. K. Howarth. 1996. Treatise on Invertebrate Paleontology pt L. Mollusca 4, revised vol. 4. Cretaceous Ammonoidea. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

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