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Euomphaloceras
Taxonomy
Euomphaloceras was named by Spath (1923) [Sepkoski's age data: K Ceno-m K Ceno-u]. Its type is Ammonites euomphalus. It is the type genus of Euomphaloceratinae.
It was assigned to Acanthoceratidae by Zaborski (1985); to Ammonoidea by Sepkoski (2002); and to Euomphaloceratinae by Cooper (1978), Wright and Kennedy (1981), Wright (1983), Wright et al. (1996) and Gale et al. (2005).
It was assigned to Acanthoceratidae by Zaborski (1985); to Ammonoidea by Sepkoski (2002); and to Euomphaloceratinae by Cooper (1978), Wright and Kennedy (1981), Wright (1983), Wright et al. (1996) and Gale et al. (2005).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1923 | Euomphaloceras Spath |
| 1931 | Kanabiceras Reeside and Weymouth pp. 11-12 |
| 1959 | Kanabiceras Matsumoto pp. 98 - 99 |
| 1978 | Euomphaloceras Cooper p. 106 |
| 1978 | Euomphaloceras (Kanabiceras) Cooper p. 106 |
| 1981 | Euomphaloceras Wright and Kennedy |
| 1982 | Euomphaloceras (Kanabiceras) Renz p. 97 |
| 1983 | Euomphaloceras Wright |
| 1983 | Kanabiceras Wright |
| 1985 | Euomphaloceras Zaborski p. 39 |
| 1996 | Euomphaloceras Wright et al. p. 167 |
| 2002 | Euomphaloceras Sepkoski |
| 2005 | Euomphaloceras Gale et al. p. 177 |
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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. †Euomphaloceras Spath 1923
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Subg. †Euomphaloceras (Euomphaloceras) Spath 1923
†Euomphaloceras costatum Cobban et al. 1989
†Euomphaloceras euomphalum Sharpe 1855
†Euomphaloceras inerme Pervinquière 1907
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Invalid names: Acanthoceras evolutum Spath 1926 [synonym]
†Euomphaloceras merewetheri Cobban et al. 1989
†Euomphaloceras septemseriatum Cragin 1893
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Invalid names: Acanthoceras kanabense Stanton 1894 [synonym], Lyelliceras stanislausense Anderson 1958 [synonym], Prionotropis echinatus Douville 1931 [synonym]
Invalid names: Kanabiceras Reeside and Weymouth 1931 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Wright et al. 1996 | Very evolute; whorl section square to depressed-octagonal; prominent umbilical and ventrolateral tubercles on some or all main ribs; ribs branching at ventrolateral tubercles= and carrying 3 rows of small, bullate to clavate tubercles on broad venter; shallow ventral constrictions on early whorls, variously persistent; ribs may be transverse or in chevrons on venter. Suture having narrow external saddle with oblique dorsal slope and wide, splayed first lateral lobe. |