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Nectocaris
Taxonomy
Nectocaris was named by Conway Morris (1976) [Sepkoski's age data: Cm mMid-u]. It is not extant. It is the type genus of Nectocarididae.
It was assigned to Problematica by Sepkoski (2002) and Bambach et al. (2007); and to Nectocarididae by Conway Morris (1976), Smith and Caron (2010) and Smith (2013).
It was assigned to Problematica by Sepkoski (2002) and Bambach et al. (2007); and to Nectocarididae by Conway Morris (1976), Smith and Caron (2010) and Smith (2013).
Synonyms
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Synonymy list
Year | Name and author |
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1976 | Nectocaris Conway Morris |
1979 | Vetustovermis Glaessner |
1999 | Petalium Luo and Hu |
2002 | Nectocaris Sepkoski |
2002 | Vetustovermis Sepkoski |
2005 | Vetustovermis Chen et al. p. 2007 |
2007 | Nectocaris Bambach et al. p. S83 |
2010 | Nectocaris Smith and Caron pp. 469 - 471 |
2010 | Petalilium Smith and Caron p. 469 |
2010 | Vetustovermis Smith and Caron p. 469 |
2013 | Nectocaris Smith |
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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.
G. †Nectocaris Conway Morris 1976
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†Nectocaris pteryx Conway Morris 1976
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Invalid names: Petalium latus Luo and Hu 1999 [synonym], Vetustovermis planus Glaessner 1979 [synonym]
Invalid names: Petalilium Luo and Hu 1999 [objective synonym], Vetustovermis Glaessner 1979 [synonym]
Diagnosis
Reference | Diagnosis | |
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M. R. Smith 2013 | Dorsoventrally flattened, non-segmented, torpedo-shaped body with no mineralized skeletal components. Small head bearing a pair of eyes on short stalks and two flexible anterior tentacles. Symmetrical denticulate chevrons posterior of mouth. Hollow funnel extruding from the ventral surface of a short neck and becoming broader as it enters a large, open axial cavity that contains paired gills. Robust serially repeated internal elements concentrically surrounding lateral sides of axial cavity. Fine superficial striations spanning lateral fins. |
Measurements
No measurements are available
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Source: g = genus | |||||
Reference: Bambach et al. 2007 |
Age range: base of the Atdabanian to the top of the Delamaran or 520.00000 to 505.00000 Ma
Collections (11 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Atdabanian | China (Yunnan) | Petalilium latus (68083) Petalium latus (96869) Vetustovermis planus (86929) | |
Atdabanian - Botomian | China (Yunnan) | Petalilium latus (9628) | |
Botomian | Australia (South Australia) | Vetustovermis planus (187498) | |
Nangaoian | China (Yunnan) | Petalilium latus (132327 132330 194163) | |
Delamaran | Canada (British Columbia) | N. pteryx (121962 121963 121964) |