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Protowenella flemingi
Taxonomy
Protowenella flemingi was named by Runnegar and Jell (1976) [DISTRIBUTION: Middle Cambrian; Australia.]. It is not a trace fossil. Its type locality is QML128. 6 km SSW of Thorntonia Homestead, which is in a Floran carbonate limestone in the Gowers Formation of Australia.
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Protowenella flemingi Runnegar and Jell |
| 1978 | Protowenella flemingi Berg-Madsen and Peel pp. 119 - 120 figs. f. 4c-e, 6 |
| 2006 | Protowenella flemingi Wotte p. 151 |
| 2010 | Protowenella flemingi Vendrasco et al. p. 116 figs. txt. f. 3P-Q; pl. 8 f. 12 – 16 |
| 2023 | Protowenella flemingi Wagner p. 5433 |
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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.
†Protowenella flemingi Runnegar and Jell 1976
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. J. Vendrasco et al. 2010 | Most internal moulds of Protowenella flemengi observed in this study have a relatively smooth surface, but faint striations parallel to growth lines are often visible, similar to but less distinct than the imprints of ‘fibers’ that occur on internal moulds of Pelagiella deltoides. A few specimens of P. flemingi preserve partial casts of the shell, and in these, bundles of fibres appear to have slightly different orientations (Pl. 8, figs 12, 15). It is not clear whether these bundles occur in the same or in different shell layers. If the latter, then it would suggest that P. flemingi, like P. deltoides, had lamello-fibrillar microstructure (with very thin lamellae, c. 1 lm thick). In general, the ‘fibers’ visible in these partial casts are roughly parallel to growth lines in the inner shell layer. Because the partial casts are so thin, possibly only capturing the innermost shell layer (Pl. 8, fig. 13), it is not clear whether P. flemingi, like P. deltoides, had an outer layer of ‘fibers’ oriented perpendicular to growth lines. |