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Lytoceras (Trachylytoceras)
Taxonomy
Trachylytoceras was named by Buckman (1913) [Sepkoski's age data: J Toar].
It was synonymized subjectively with Lytoceras by Wright et al. (1996); it was reranked as Lytoceras (Trachylytoceras) by Hoffmann (2010), Galácz et al. (2010).
It was assigned to Ammonoidea by Sepkoski (2002); and to Lytoceras by Hoffmann (2010), Galácz et al. (2010).
It was synonymized subjectively with Lytoceras by Wright et al. (1996); it was reranked as Lytoceras (Trachylytoceras) by Hoffmann (2010), Galácz et al. (2010).
It was assigned to Ammonoidea by Sepkoski (2002); and to Lytoceras by Hoffmann (2010), Galácz et al. (2010).
Species lacking formal opinion data
Lytoceras altum, Lytoceras annibal, Lytoceras ceratophagum, Lytoceras cinctum, Lytoceras cornucopiae, Lytoceras densifibriatum, Lytoceras densifimbriatum, Lytoceras densifimbriatus, Lytoceras dilucidum, Lytoceras fibriatum, Lytoceras hircinum, Lytoceras ktenasi, Lytoceras mahafalense, Lytoceras onychograptum, Lytoceras ophioneum, Lytoceras orsini, Lytoceras penicillatum, Lytoceras phaestus, Lytoceras polyanchomenum, Lytoceras polycyclum, Lytoceras porlaeve, Lytoceras puezanum, Lytoceras raricinctum, Lytoceras sauclum, Lytoceras strambergense, Lytoceras subescens, Lytoceras taharoense, Lytoceras taharosense, Lytoceras torulosum, Lytoceras varagurense
Synonymy list
| Year | Name and author |
|---|---|
| 1913 | Trachylytoceras Buckman |
| 2002 | Trachylytoceras Sepkoski |
| 2010 | Lytoceras (Trachylytoceras) Galácz et al. p. 325 |
| 2010 | Lytoceras (Trachylytoceras) Hoffmann p. 24 |
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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.
Subg. †Lytoceras (Trachylytoceras) Buckman 1913
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†Lytoceras (Trachylytoceras) sepositum Meneghini 1875
†Trachylytoceras nitidum Young and Bird 1828
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Falciferum to the top of the Bifrons or 184.20000 to 174.70000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Falciferum | United Kingdom (Yorkshire) | Trachylytoceras nitidum (147841) | |
| Bifrons | Italy | Lytoceras sepositum (147028 147031 147034) | |
| Bifrons | Hungary | Lytoceras sepositum (147245) |