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Umbilia furneauxensis
Taxonomy
Umbilia furneauxensis was named by Southgate et al. (2021). Its type specimen is TMAGZ10550, a shell, and it is a 3D body fossil. Its type locality is Lackrana, Flinders Island, which is in a Pliocene marine limestone/sandstone in the Cameron Inlet Formation of Australia.
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Umbilia furneauxensis Southgate et al. figs. 1, 2 and 3, Table 1 |
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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.
†Umbilia furneauxensis Southgate et al. 2021
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. C. Southgate et al. 2021 | The new species can be separated from all other members of the genus, fossil and extant, by a combination of the following characteristics: relatively small size (<60 mm in shell length) with the dorsal summit centrally, W/L = 60% and H/L = 49%; apertural dentition extending as ridges to at least midway on the base and labrum; columellar ridges somewhat divergent, may become bifurcate or converge, and may not intersect aperture; heavily callused margins with distinctive depressions or indentations, forming a dimpled surface that may extend on to the base; not deeply umbilicate; spire slightly sunken or flat, covered by callus; anterior and posterior terminals extended. |