Acanthoceratoidea

Hourcqia pacifica, from Wright et al. (1996).

Belongs within: Brancoceratoidea.
Contains: Pseudotissotiinae, Tegoceras, Stoliczkaiinae, Forbesiceratidae, Acanthoceratidae, Vascoceratidae.

The Acanthoceratoidea are a Cretaceous group of usually strongly ribbed ammonites, with a tendency to develop prominent tubercles. The Lower Albian to Lower Cenomanian Lyelliceratidae had rather simple sutures with bifid saddles, a deep, parallel-sided ventral lobe, trifid lateral lobes and no umbilical retraction (Wright et al. 1996).

<==Acanthoceratoidea [Acanthoceratida, Lyellicerataceae, Lyelliceratoidea]KK08a
    |--PseudotissotiidaeWCH96
    |    |--PseudotissotiinaeWCH96
    |    `--Hourcqiinae [Hourcqiidae]WCH96
    |         |--Masiaposites Collignon 1965WCH96
    |         |    `--*M. carinatus Collignon 1965WCH96
    |         `--Hourcqia Collignon 1965WCH96
    |              |--*H. mirabilis Collignon 1965WCH96
    |              |--H. hataiiP93
    |              |--H. ingensWCH96
    |              `--H. pacificaWCH96
    `--LyelliceratidaeKK08a
         |--TegocerasKK08a
         `--+--StoliczkaiinaeKK08a
            |--ForbesiceratidaeWCH96
            |--+--AcanthoceratidaeKK08a
            |  `--VascoceratidaeWCH96
            `--Flickiidae [Flickidae]KK08a
                 |--SalaziceratinaeKK08b
                 |    |--Neosaynoceras Breistroffer 1947WCH96
                 |    |    `--*N. gazellae (Pervinquière 1907) [=Saynoceras gazellae]WCH96
                 |    `--Salaziceras Breistroffer 1936KK08b (see below for synonymy)
                 |         |--*S. salazacense (Hébert & Munier-Chalmas 1875) [=Ammonites salazacensis]KK08b
                 |         |--S. bakonyense Scholz 1979 [=S. (*Noskytes) bakonyense]WCH96
                 |         `--S. lemoinei Kennedy & Klinger 2008KK08b
                 `--FlickiinaeWCH96
                      |--Flickia Pervinquière 1907WCH96
                      |    `--*F. simplex Pervinquière 1907WCH96
                      |--Adkinsia Böse 1928WCH96
                      |    `--A. bosquensis (Adkins 1920) [=Flickia bosquensis; incl. *A. adkinsi Böse 1928]WCH96
                      |--Litophragmoceras Kennedy & Cobban 1988WCH96
                      |    `--*L. incomptum Kennedy & Cobban 1988WCH96
                      `--Ficheuria Pervinquière 1910WCH96
                           |--*F. kiliani Pervinquière 1910WCH96
                           `--F. pernoniWCH96

Salaziceras Breistroffer 1936KK08b [=Salazaciceras Breistroffer 1940WCH96; incl. Noskytes Scholz 1979WCH96]

*Type species of generic name indicated

References

[KK08a] Kennedy, W. J., & H. C. Klinger. 2008a. Cretaceous faunas from Zululand and Natal, South Africa. The ammonite subfamily Lyelliceratinae Spath, 1921. African Natural History 4: 57–111.

[KK08b] Kennedy, W. J., & H. C. Klinger. 2008b. Hypermorphosis in Salaziceras, a Cretaceous ammonite, from Madagascar. African Natural History 4: 113–116.

[P93] Page, K. N. 1993. Mollusca: Cephalopoda (Ammonoidea: Phylloceratina, Lytoceratina, Ammonitina and Ancyloceratina). In: Benton, M. J. (ed.) The Fossil Record 2 pp. 213–227. Chapman & Hall: London.

[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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