Smith, M.R.; Caron, J.-B.
morphology · taxonomy · topology · range · biogeography · ecology
Ninety newly prepared Burgess Shale specimens reveal paired camera-like eyes, a funnel, lateral fins and two tentacles; cephalopod affinity remains debated because diagnostic hard-part and mouthpart evidence is absent.
Ninety newly prepared Nectocaris specimens reveal paired eyes, two tentacles, lateral fins and a ventral funnel-like structure that support a cephalopod interpretation in the cited study, but absent diagnostic shell, siphuncle, beak and radula evidence leaves that placement contested.
claim:event:nectocaris-soft-body-cephalopod-testNectocaris pteryx was interpreted as a soft-bodied cephalopod in the cited study, but absent diagnostic hard parts and feeding structures keep that placement contested.
claim:taxon:nectocaris:taxonomyThe profile is restricted to the Burgess Shale sample and does not infer the full distribution of Nectocaris.
claim:taxon:nectocaris:biogeographySwimming and predation are inferred from fins, eyes, tentacles and a funnel-like structure; performance, prey and behaviour are not directly observed.
claim:taxon:nectocaris:ecologyNinety specimens preserve paired eyes, two tentacles, lateral fins and a ventral funnel-like structure, while shell, siphuncle, beak and radula evidence is absent.
claim:taxon:nectocaris:morphologyThe 508–505 Ma envelope is a bounded Burgess Shale context, not a global species duration or cephalopod crown age.
claim:taxon:nectocaris:fossil-range