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Aspidoceras irregulare
Taxonomy
Aspidoceras irregulare was named by Dacque (1905). It is not extant. Its type locality is Atschabo, which is in a Kimmeridgian shallow subtidal limestone in Ethiopia.
It was recombined as Simaspidoceras irregulare by Howarth (1998).
It was recombined as Simaspidoceras irregulare by Howarth (1998).
Sister species lacking formal opinion data
A. acanthomphalum, A. altenense, A. bispinosum, A. bussierei, A. cyclotum, A. deski, A. gourguechoni, A. haynoldi, A. hoplisum, A. hystricosum, A. laevigatum, A. longispinum, A. meridionale, A. mombasense, A. phoenicium, A. piccininii, A. pipini, A. quercynum, A. rogoniscense, A. subwynnei, A. uhlandi, A. uninodosum, A. zeuschneri, A. acuticostatum, A. akantenn, A. catena, A. costatum, A. eucyphum, A. hominale, A. hypselum, A. loricatum, A. paucituberculatum, A. striatocostatum, A. tietzei, A. vettersianum, A. spathi, A. choffati
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Aspidoceras irregulare Dacque p. 152 |
| 1998 | Simaspidoceras irregulare Howarth p. 68 |
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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.
†Aspidoceras irregulare Dacque 1905
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Kimmeridgian or 154.80000 to 149.20000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | Ethiopia | Aspidoceras irregulare (93501) | |
| Kimmeridgian | Ethiopia | Aspidoceras irregulare (type locality: 94585) | |
| Tithonian - Kimmeridgian | Yemen (Wadi Hajar) | Simaspidoceras irregulare (2569 2572) |