Metatissotia sp., from Antonov.

Belongs within: Collignoniceratidae.

The Tissotiidae are an Upper Cretaceous (Upper Turonian to Coniacian) lineage of ammonites (Wright et al. 1996).

Characters (from Wright et al. 1996): Compressed to globular, with at least at some stage serrated or continuous keel and ventrolateral rows of tubercles. Suture normally with denticulate lobes and entire, rounded saddles, but first lateral lobe may be divided by adventive lobe.

    |--Heterotissotia Peron 1897WCH96
    |    `--*H. neoceratites Peron 1897WCH96
    |--Paratissotia Hyatt 1903WCH96
    |    `--*P. regularis Hyatt 1903WCH96
    |--Tissotioides Reyment 1958 [incl. Reymentoceras Wiedmann 1960]WCH96
    |    |--*T. haplophyllus (Redtenbacher 1873) [=Ammonites haplophyllus]WCH96
    |    `--T. hispanicus Wiedmann 1960 [=T. (*Reymentoceras) hispanicus]WCH96
    |--Tissotia Douvillé 1890WCH96
    |    |  i. s.: T. steinmanniP93
    |    |--*T. (Tissotia) tissoti (Bayle 1878) [=Buchiceras tissoti]WCH96
    |    `--T. (Subtissotia Hyatt 1903)WCH96
    |         `--T. (*S.) inflata Peron 1897 [=T. tissoti var. inflata]WCH96
    `--Metatissotia Hyatt 1903 [incl. Dordiella Reyment 1958]WCH96
         |--*M. fourneli (Bayle 1878) [=Buchiceras fourneli]WCH96
         |--M. bakundu (Reyment 1958) [=*Dordiella bakundu]WCH96
         |--M. desmoulinsiP93
         |--M. nanclusiP93
         `--M. nodosaP93

*Type species of generic name indicated


[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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