Cycloloboidea

Waagenoceras, from here.

Belongs within: Ammonoidea.

The Cycloloboidea are a group of discoidal to globular ammonoids known from the Upper Carboniferous to the Upper Permian (Miller et al. 1957).

Characters (from Miller et al. 1957, as Cyclolobaceae): Thickly discoidal to globular conchs, typically with small umbilici and ceratitic sutures possessing auxiliary lobes. Primitively with few auxiliary lobes; advanced forms with many auxiliary lobes, ammonitic sutures.

<==Cycloloboidea ZL04
    |--Vidrioceratidae ZL04
    |    |--Vidrioceras R79
    |    |--Glassoceras normani RR79
    |    |--Prostacheoceras Ruzhencev 1937 ZL04
    |    |    |--*P. juresanensis (Maximova 1935) [=Marathonites juresanensis] ZL04
    |    |    |--P. alter Leonova 1989 ZL04
    |    |    `--P. oshense (Toumanskaya 1938) ZL04
    |    `--Stacheoceras Gemmellaro 1887 RR79, ZL04
    |         |--S. antiquum RR79
    |         |--S. gemmellaroi RR79
    |         |--S. gordoni Miller, Furnish & Clark 1957 P68
    |         |--S. normani Miller & Furnish 1957 P68
    |         `--S. tridens RR79
    `--Cyclolobidae RR79
         |--Kufengoceras RR79
         |--Mexicoceras RR79
         |--Shengoceras RR79
         |--Krafftoceras RR79
         |--Timorites RR79
         |    |--T. curvicostatus RR79
         |    `--T. schucherti P68
         |--Cyclolobus RR79
         |    |--*C. oldhami H84
         |    |--C. kullingi RR79
         |    |--C. persulcatus RR79
         |    `--C. teicherti RR79
         `--Waagenoceras RR79
              |--W. dieneri P68
              `--W. guadelupense Girty 1908 [=W. cummingsi guadelupense] P68
                   |--W. g. guadelupense P68
                   |--W. g. smithi Miller & Furnish 1940 P68
                   `--W. g. thompsoni Miller & Furnish 1940 P68

*Type species of generic name indicated

REFERENCES

[H84] Hyatt, A. 1883–1884. Genera of fossil cephalopods. Boston Soc. Nat. History, Proc. 22: 253–338.

Miller, A. K., W. M. Furnish & O. H. Schindewolf. 1957. Paleozoic Ammonoidea. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt L. Mollusca 4. Cephalopoda: Ammonoidea pp. L11–L79. Geological Society of America, and University of Kansas Press.

[P68] Purnell, L. R. 1968. Catalog of the type specimens of invertebrate fossils. Part I: Paleozoic Cephalopoda. United States National Museum Bulletin 262: 1–198.

[R79] Ross, C. A. 1979. Carboniferous. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A254–A290. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[RR79] Ross, C. A., & J. R. P. Ross. 1979. Permian. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A291–A350. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[ZL04] Zhou, Z., & M. Liengjarern. 2004. Lower Permian perrinitid ammonoid faunas from Thailand. Journal of Paleontology 78: 317–339.