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Shumardia extensa
Taxonomy
Shumardia extensa was named by Weir (1959). Its type specimen is BMNH 53383, a cephalon/head, and it is a 3D body fossil. Its type locality is Stream on south-eastern boundary of Ballyvorgal South, Slieve Bemagh Mountains, which is in a Katian marine mudstone in Ireland.
It was recombined as Shumardia (Shumardoella) extensa by Hammann and Leone (1997).
It was recombined as Shumardia (Shumardoella) extensa by Hammann and Leone (1997).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Shumardia extensa Weir pp. 374 - 375 figs. Plate 63, figs. 5, 6 |
| 1997 | Shumardia (Shumardoella) extensa Hammann and Leone p. 44 figs. pl. 4, figs 1–8. |
| 2011 | Shumardia extensa Ghobadi Pour et al. pp. 163 - 165 fig. 4a–h |
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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.
†Shumardia extensa Weir 1959
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Weir 1959 | Shumardia with isolated basal lateral glabellar lobes; glabella overhanging anterior margin. Posterior cephalic border furrows broad (sag.). |