Cadoceratinae

Belongs within: Stephanocerataceae.

The Cadoceratinae are a group of ammonites known from the Callovian (Middle Jurassic), members of which have a funnel-shaped, more or less open umbilicus and a relatively broad cross-section (Poulton 1987).

<==Cadoceratinae
    |--EocephalitesH79
    |--Longaeviceras staffinenseDCH81
    |--Stenocadoceras Imlay 1953P87
    |    `--S. stenoloboide [=Cadoceras (Stenocadoceras) stenoloboide]W81
    |--Pseudocadoceras Buckman 1918 [=Novocadoceras Sasonov 1965]P87
    |    `--*P. borealeP87
    |--Paracadoceras Crickmay 1930P87
    |    `--P. harveyiP87
    |--CranocephalitesH79
    |    |--C. borealisP87
    |    |--C. costidensusP87
    |    |--C. indistinctusC79
    |    |--C. pompeckjiP87
    |    `--C. vulgarisP87
    `--Cadoceras Fischer 1882 (see below for synonymy)P87
         |--*C. sublaeveP87
         |--C. anabarenseP87
         |--C. apertumP87
         |--C. arcticum Frebold 1964P87
         |--C. barnstoni (Meek 1859) (see below for synonymy)P87
         |--C. bodylevskyi Frebold 1964P87
         |--C. calyxP87
         |--C. catostomaP87
         |--C. declinatumP87
         |--C. densicostatumP87
         |--C. elatmae (Nikitin 1881)P87
         |--C. emilianzeviP87
         |--C. excelsusP87
         |--C. falsum Voronetz 1962 [=C. (*Bryocadoceras) falsum]P87
         |--C. glabrumP87
         |--C. lenaenseP87
         |--C. nordenskjoldiP87
         |--C. perraraum Voronetz 1962P87
         |--C. septentrionale Frebold 1964 [incl. C. s. var. latidorsata]P87
         |--C. simulansP87
         |--C. subcatostomaP87
         |--C. subtenuicostatum Voronetz 1962 [=C. (*Streptocadoceras) subtenuicostatum]P87
         |--C. tschernyscheviP87
         |--C. variabile Spath 1932P87
         `--C. voronetsae Frebold 1964P87

Cadoceras Fischer 1882 [incl. Bryocadoceras Meledina 1977, Catacadoceras Bodylevsky 1960, Streptocadoceras Meledina 1977]^P87

Cadoceras barnstoni (Meek 1859) [=Ammonites barnstoni; incl. C. barnstoni var. arcuata, C. (*Catacadoceras) laptievi Bodylevsky 1960, C. subcalyx Voronetz 1962, C. subcatostoma Voronetz 1962, C. ventroplanum Voronetz 1962]^P87

*Type species of generic name indicated

References

[C79] Callomon, J. H. 1979. Marine boreal Bathonian fossils from the northern North Sea and their palaeogeographical significance. Proceedings of the Geological Association 90: 163–169.

[DCH81] Donovan, D. T., J. H. Callomon & M. K. Howart. 1981. Classification of the Jurassic Ammonitina. 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. 101–155. Academic Press.

[H79] Hölder, H. 1979. Jurassic. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A390–A417. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[P87] Poulton, T. P. 1987. Zonation and correlation of Middle Boreal Bathonian to Lower Callovian (Jurassic) ammonites, Salmon Cache Canyon, Porcupine River, northern Yukon. Geological Survey of Canada—Bulletin 358: 1–155.

[W81] Westermann, G. E. G. 1981. Ammonite biochronology and biogeography of the circum-Pacific Middle Jurassic. 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. 459–498. Academic Press.