Bochianitidae

Leptoceras brunneri, from Wright et al. (1996).

Belongs within: Stephanocerataceae.

The Bochianitidae are an Upper Jurassic to Lower Cretaceous lineage of loosely coiled to straight ammonoids. They may be divided between two subfamilies with the Protancyloceratinae being loosely coiled (rarely helical), strongly ribbed forms. The Bochianitinae have straight shells that bear prorsiradiate annular ribs or are entirely smooth (Wright et al. 1996).

<==Bochianitidae [Baculinidae]WCH96
|--BochianitinaeWCH96
| |--Umgazaniceras Klinger & Kennedy 1979WCH96
| | `--*U. thieuloyi Klinger & Kennedy 1979WCH96
| |--Baculina Orbigny 1850WCH96
| | `--*B. rouyana Orbigny 1850WCH96
| |--Janenschites Durand Delga 1954WCH96
| | `--*J. janenschi (Zwierzycki 1914) [=Bochianites janenschi]WCH96
| |--Kabylites Durand Delga 1954WCH96
| | `--*K. superstes (Pervinquière 1910) [=Bochianites superstes]WCH96
| `--Bochianites Lory 1898WCH96
| |--*B. neocomiensis (Orbigny 1842) [=Baculites neocomiensis]WCH96
| `--B. baculitoidesW69
`--Protancyloceratinae [Leptoceratinae, Protancyloceratidae]WCH96
|--Juddiceras Spath 1924WCH96
| `--*J. curvicostum (Koenen 1902) [=Crioceras curvicosta]WCH96
|--Pseudomoutoniceras Autran, Delanoy & Thomel 1986WCH96
| `--*P. annulare (Orbigny 1842) [=Toxoceras annulare]WCH96
|--Vinalesites Thieuloy 1966 [=Pseudoanahamulina Judoley & Furrazola-Bermúdez 1968]WCH96
| `--*V. rosariensis (Imlay 1942) [=Hamulina rosariensis, *Pseudoanahamulina rosariensis]WCH96
|--Cochlocrioceras Spath 1950WCH96
| `--*C. turriculatum Spath 1950WCH96
|--Parapedioceras Collignon 1962WCH96
| `--*P. colcanapi Collignon 1962WCH96
|--Protancyloceras Spath 1924WCH96
| |--*P. guembeli (Zittel 1886) [=Ancyloceras guembeli]WCH96
| |--P. kurdistanenseWCH96
| `--P. punicumW69
`--Leptoceras Uhlig 1883 [incl. Protoleptoceras Nikolov 1966]WCH96
|--*L. brunneri (Ooster 1860) [=Ancyloceras brunneri]WCH96
|--*Protoleptoceras’ jelevi Nikolov 1966WCH96
|--L. puzosianumR81
`--L. studeriW69

*Type species of generic name indicated

References

[R81] Rawson, P. F. 1981. Early Cretaceous ammonite biostratigraphy and biogeography. In: House, M. R., & J. R. Senior (eds) The Ammonoidea: The evolution, classification, mode of life and geological usefulness of a major fossil group pp. 499–529. Academic Press.

[W69] Wiedmann, J. 1969. The heteromorphs and ammonoid extinction. Biological Reviews 44: 563–602.

[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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