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Lazarevonia arcuata
Taxonomy
Krotovia arcuata was named by Waterhouse (1978). Its type specimen is UQF 68815 and is not a trace fossil. Its type locality is W1390, Section 22, Pija Village, Karnali, which is in a Changhsingian marine shale/limestone in the Senja Formation of Nepal.
It was recombined as Lazarevonia arcuata by Waterhouse (2001).
It was recombined as Lazarevonia arcuata by Waterhouse (2001).
Synonymy list
Year | Name and author |
---|---|
1978 | Krotovia arcuata Waterhouse pp. 52-54 figs. Pl 6, figs 2-10 |
1983 | Krotovia arcuata Waterhouse p. 122 figs. Pl 2, figs 9-18 |
1999 | Krotovia arcuata Shen and Jin p. 555 figs. 3.1-3.3 |
2000 | Krotovia arcuata Shen et al. p. 737 figs. 9.15-9.18,9.20 |
2001 | Lazarevonia arcuata Waterhouse p. 22 |
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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.
†Lazarevonia arcuata Waterhouse 1978
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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valve height | 5 | 10.6 | 6.65 | 14.5 | 11.4 | 3.10 |
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Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Aberhan et al. 2004, Williams et al. 2000 |
Age range: Changhsingian or 254.17000 to 252.17000 Ma
Collections (25 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Changhsingian | Nepal | Krotovia arcuata (43152 type locality: 43153 43154 43155 43156 43157 43158 43159 120508 120511 120512 120513 120514 120516 120518 120519 120520 120521 120522 120523) | |
Changhsingian | China (Xizang) | Krotovia arcuata (51398 51401 73600 73607 117541) |