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Taxonomy
Nematocrania crassa was named by Grant (1976). Its type specimen is USNM 211603, a valve (Dorsal valve), and it is not a trace fossil. It is the type species of Nematocrania.
Synonymy list
Year | Name and author |
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1976 | Nematocrania crassa Grant pp. 32-35 figs. Pl 1, figs 1-28 |
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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.
†Nematocrania crassa Grant 1976
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 5 | 2.72 | 1.80 | 3.60 | 2.90 | 0.814 | |
valve height | 3 | 2.26 | 1.40 | 3.30 | 2.50 | 0.954 |
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Source: o = order, c = class, p = phylum | |||||
References: Williams et al. 1996, Aberhan et al. 2004 |