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Trigonotreta australis
Taxonomy
Spirifer australis was named by Bion (1928) [Spirifer stokesi var. australis].
It was recombined as Trigonotreta australis by Waterhouse (1987).
It was recombined as Trigonotreta australis by Waterhouse (1987).
Synonymy list
Year | Name and author |
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1928 | Spirifer australis Bion p. 30 |
1987 | Trigonotreta australis Waterhouse p. 17 figs. Pl 3, figs 14,18-20; pl 4, figs 1-6 |
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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.
†Trigonotreta australis Bion 1928
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Diagnosis
Reference | Diagnosis | |
---|---|---|
J. B. Waterhouse 1987 | Transverse shells with well formed plicae and high primary costae, well defined concentric growth lamellae, fold high with narrow crest, adminicula short and well spaced, ventral muscle field broad |