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Taxonomy
Entomostracites extenuatus was named by Wahlenberg (1821). It is the type species of Megistaspis (Megistaspidella).
It was recombined as Asaphus extenuatus by Hisinger (1837); it was recombined as Megalaspis extenuata by Angelin (1854); it was recombined as Megistaspis (Megistaspidella) extenuata by Nielsen (1995); it was recombined as Megistaspidella extenuatus by Jell and Adrain (2002).
It was recombined as Asaphus extenuatus by Hisinger (1837); it was recombined as Megalaspis extenuata by Angelin (1854); it was recombined as Megistaspis (Megistaspidella) extenuata by Nielsen (1995); it was recombined as Megistaspidella extenuatus by Jell and Adrain (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1821 | Entomostracites extenuatus Wahlenberg |
| 1837 | Asaphus extenuatus Hisinger p. 43 figs. pl. 2 f. 3 |
| 1854 | Megalaspis extenuata Angelin p. 17 |
| 1995 | Megistaspis (Megistaspidella) extenuata Nielsen p. 152 fig. 117 |
| 2002 | Megistaspidella extenuatus Jell and Adrain p. 404 |
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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.
†Megistaspis (Megistaspidella) extenuata Wahlenberg 1821
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009, Hendy et al. 2009 | |||||