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Sphenodiscus lobatus
Taxonomy
Ammonites lobata was named by Tuomey (1856) [DISTRIBUTION: Maastrichtian; Atlantic and Gulf Coastal Plain.]. It is not a trace fossil.
It was synonymized subjectively with Ammonites lenticularis by Kennedy (1986); it was recombined as Sphenodiscus lobatus by Hyatt (1903), Reyment (1955), Zaborski (1982), Zaborski (1985), Al-Harithi and Ibrahim (1992), Kennedy and Cobban (1996), Kennedy et al. (1997) and Moneer et al. (2021).
It was synonymized subjectively with Ammonites lenticularis by Kennedy (1986); it was recombined as Sphenodiscus lobatus by Hyatt (1903), Reyment (1955), Zaborski (1982), Zaborski (1985), Al-Harithi and Ibrahim (1992), Kennedy and Cobban (1996), Kennedy et al. (1997) and Moneer et al. (2021).
Synonyms
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Synonymy list
Year | Name and author |
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1852 | Ammonites lenticularis Owen p. 579 |
1856 | Ammonites lobata Tuomey p. 579 figs. pl. 8, fig. 5 |
1903 | Sphenodiscus lobatus Hyatt p. 66 figs. Pl. Vi, figs. 1, 2; Pl. VII, figs. 1, 2,; Pl. IX, figs. 11 - 13 |
1903 | Sphenodiscus lenticularis Hyatt pp. 71 - 72 figs. Pl. VIII, figs. 1, 2; Pl. IX, figs. 1 - 6 |
1928 | Sphenodiscus lenticularis Böse p. 293 |
1955 | Sphenodiscus lobatus Reyment p. 87 figs. Pl 22, figs 1a,b; text-fig 44 |
1982 | Sphenodiscus lobatus Zaborski p. 316 figs. 21, 24, 25 |
1985 | Sphenodiscus lobatus Zaborski p. 57 figs. 63-65 |
1986 | Sphenodiscus lenticularis Kennedy p. 176 |
1992 | Sphenodiscus lobatus Al-Harithi and Ibrahim p. 432 figs. Pl 1, fig 2; pl 2, fig 4 |
1996 | Sphenodiscus lobatus Kennedy and Cobban p. 802 figs. 2.4-2.6, 2.13, 2.14, 2.19-2.21 |
1997 | Sphenodiscus lobatus Kennedy et al. p. 4 |
2021 | Sphenodiscus lobatus Moneer et al. p. 3535 figs. 7A1, A2 |
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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.
†Sphenodiscus lobatus Tuomey 1856
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†Sphenodiscus lenticularis mississippiensis Hyatt 1903
Invalid names: Ammonites lenticularis Owen 1852 [replaced]
Diagnosis
No diagnoses are available