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Sphenodiscidae
Taxonomy
Sphenodiscidae was named by Hyatt (1900). It is not extant.
It was assigned to Ammonoidea by Zaborski (1985); to Acanthocerataceae by Wright (1952), Kennedy (1995), Kennedy (1995), Kennedy and Cobban (1996), Kennedy et al. (1996), Kennedy et al. (1997), Kennedy (1999), Landman and Cobban (2003) and Ahmad et al. (2015); and to Acanthoceratoidea by Kennedy and Klinger (2012) and Jagt et al. (2019).
It was assigned to Ammonoidea by Zaborski (1985); to Acanthocerataceae by Wright (1952), Kennedy (1995), Kennedy (1995), Kennedy and Cobban (1996), Kennedy et al. (1996), Kennedy et al. (1997), Kennedy (1999), Landman and Cobban (2003) and Ahmad et al. (2015); and to Acanthoceratoidea by Kennedy and Klinger (2012) and Jagt et al. (2019).
Synonyms
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Synonymy list
Year | Name and author |
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1900 | Sphenodiscidae Hyatt p. 585 |
1952 | Sphenodiscidae Wright |
1982 | Libycoceratidae Zaborski p. 307 |
1985 | Sphenodiscidae Zaborski p. 57 |
1995 | Sphenodiscidae Kennedy p. 247 |
1996 | Sphenodiscidae Kennedy and Cobban p. 801 |
1996 | Sphenodiscidae Kennedy et al. p. 6 |
1997 | Sphenodiscidae Kennedy et al. p. 4 |
1999 | Sphenodiscidae Kennedy p. 653 |
2003 | Sphenodiscidae Landman and Cobban p. 13 |
2012 | Sphenodiscidae Kennedy and Klinger p. 31 |
2015 | Sphenodiscidae Ahmad et al. p. 247 |
2019 | Sphenodiscidae Jagt et al. p. 591 |
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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.
Fm. †Sphenodiscidae Hyatt 1900
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G. †Coahuilites Böse 1928
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†Coahuilites cavinsi Böse 1928
†Coahuilites orynskii Böse 1928
†Coahuilites sheltoni Böse 1928
Subfm. †Lenticeratinae Hyatt 1900
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G. †Eulophoceras Hyatt 1903
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†Eulophoceras austriacum Summesberger 1979
†Eulophoceras bererense Hourcq 1949
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Invalid names: Eulophoceras besairiei Hourcq 1949 [synonym], Eulophoceras manambolense Hourcq 1949 [synonym], Eulophoceras miloni Hourcq 1949 [synonym]
†Eulophoceras natalense Hyatt 1903
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Invalid names: Pelecodiscus amapondensis Van Hoepen 1921 [synonym], Pelecodiscus capensis Van Hoepen 1921 [synonym], Pelecodiscus umzambiensis Van Hoepen 1921 [synonym], Spheniscoceras africanum Spath 1921 [synonym], Spheniscoceras minor Spath 1921 [synonym], Spheniscoceras tenue Spath 1921 [synonym]
Invalid names: Eulophoceras grossouvrei Collignon 1983 [nomen dubium], Pelecodiscus Van Hoepen 1921 [synonym], Praelibycoceras Douvillé 1912 [synonym], Skoumalia Summesberger 1979 [synonym], Spheniscoceras Spath 1921 [synonym]
G. †Paralenticeras Hyatt 1900
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†Paralenticeras caneroti Collignon 1983
†Paralenticeras leonhardianum Karsten 1856
†Paralenticeras sieversi Gerhardt 1897
G. †Libycoceras Hyatt 1900
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†Libycoceras acutodorsatus Noetling 1897
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Invalid names: Libycoceras chargense Blanckenhorn 1900 [synonym]
†Libycoceras afikpoense Reyment 1955
†Libycoceras crossense Zaborski 1982
†Libycoceras dandense Howarth 1965
†Libycoceras ismaelis Zittel 1884
G. †Sphenodiscus Meek 1871
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†Sphenodiscus aberrans Böse 1928
†Sphenodiscus beecheri Hyatt 1903
†Sphenodiscus binkhorsti Böhm 1898
†Sphenodiscus brasiliensis Maury 1930
†Sphenodiscus corroyi Sornay and Tessier 1949
†Sphenodiscus intermedius Böse 1928
†Sphenodiscus konincki Hyatt 1903
†Sphenodiscus lobatus Tuomey 1856
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†Sphenodiscus lenticularis mississippiensis Hyatt 1903
Invalid names: Ammonites lenticularis Owen 1852 [replaced]
†Sphenodiscus parahybensis Maury 1930
†Sphenodiscus pleurisepta Conrad 1857
†Sphenodiscus prepleurisepta Böse 1928
†Sphenodiscus siva Forbes 1846
†Sphenodiscus stantoni Hyatt 1903
†Sphenodiscus ubaghsi de Groussouvre 1894
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Invalid names: Sphenodiscus rutoti de Grossouvre 1894 [synonym]
Invalid names: Libycoceratidae Zaborski 1982 [synonym]
Diagnosis
No diagnoses are available