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Tissotia
Taxonomy
Tissotia was named by Douvillé (1890) [Sepkoski's age data: K Coni K Sant-l]. It is the type genus of Tissotiidae.
It was assigned to Tissotiidae by Hyatt (1900), Benavides-Caceres (1956); and to Ammonoidea by Sepkoski (2002).
It was assigned to Tissotiidae by Hyatt (1900), Benavides-Caceres (1956); and to Ammonoidea by Sepkoski (2002).
Species
Species lacking formal opinion data
Entered
by J. Sepkoski on 2003-01-23; modified by A. Hendy on 2013-04-30
Synonymy list
| Year | Name and author |
|---|---|
| 1890 | Tissotia Douvillé |
| 1900 | Tissotia Hyatt p. 590 |
| 1956 | Tissotia Benavides-Caceres p. 479 |
| 2002 | Tissotia Sepkoski |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Tissotia Douvillé 1890
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†Tissotia awguensis Reyment 1955
†Tissotia ewaldi Peron 1896
†Tissotia fourneli Bayle 1849
†Tissotia globosa Hyatt 1903
†Tissotia halli Knechtel 1947
†Tissotia hedbergi Benavides-Caceres 1956
†Tissotia latelobata Solger 1904
†Tissotia polygona Solger 1904
†Tissotia steinmanni Lissón 1908
†Tissotia tissoti Bayle 1878
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Hyatt 1900 | Primitive forms have tuberculated costae and keeled venters, the keel probably having originated by coalescence of a median line of tubercles. Sutures usually very simple, sometimes similar to Pulehellidae, and. first lateral saddles apt to be
unequally bifid. Adventitious saddles appear in some forms, but arise by division of the outer sides of the first laterals instead of from their inner sides as in Placenticeratidae. |