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Holcothyris trigonalis
Taxonomy
Holcothyris trigonalis was named by Buckman (1917). Its type specimen is GSI Type No. 11753 and is a 3D body fossil. Its type locality is Bawgyo, left bank of R. Namtu opposite, which is in a Bathonian carbonate limestone in the Namyau Beds Formation of Myanmar.
Subspecies
Sister species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1917 | Holcothyris trigonalis Buckman p. 189 figs. Pl. 9, Fig. 5a-c |
1917 | Holcothyris transversalis Buckman p. 201 figs. Pl. 12, Fig. 1a-d |
1940 | Holcothyris trigonalis Sahni p. 28 figs. Pl. 4, Fig. 304, a-c; Text Fig. 24a-c |
1940 | Holcothyris transversalis Sahni p. 30 figs. Pl. 4, Fig. 11-14a-c; Text Fig. 25a-c |
1987 | Holcothyris trigonalis Yang and Shi p. 42 figs. Pl. 3, Fig. 13-14; Text Fig. 10 |
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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.
†Holcothyris trigonalis Buckman 1917
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†Holcothyris trigonalis pulchra Sahni 1940
Invalid names: Holcothyris transversalis Buckman 1917 [synonym]
Diagnosis
No diagnoses are available