Ortega-Hernández, J.; Lerosey-Aubril, R.; Losso, S.R.; Weaver, J.C.
range · morphology · topology · methods · taxonomy · biogeography
Primary imaging and elemental mapping of Mollisonia nervous tissues; neuroanatomical and appendicular signals conflict and are not collapsed into one topology.
Carbonaceous films in Mollisonia symmetrica specimens MCZ 1811 and USNM 305093 preserve optic nerves, a possible compact cephalic synganglion and a segmental ventral nerve cord; incomplete preservation and conflicting appendicular signal make ancestral organization and stem placement contested.
claim:event:mollisonia-neuroanatomy-mosaicMollisonia symmetrica combines neuroanatomical and appendicular signals that support competing placements; the profile does not select a direct ancestor.
claim:taxon:mollisonia:taxonomyThe profile is bounded to the cited Burgess Shale specimens and does not infer the genus’s complete distribution.
claim:taxon:mollisonia:biogeographyThe profiled Mollisonia symmetrica neural specimens do not establish diet or guild; separately, M. plenovenatrix appendages support a benthic-micropredator interpretation for that species, not every Mollisonia.
claim:taxon:mollisonia:ecologyMCZ 1811 and USNM 305093 preserve optic nerves, a possible compact synganglion and a segmental ventral nerve cord as carbonaceous films.
claim:taxon:mollisonia:morphologyThe 508.1–505 Ma interval is a Burgess Shale sample envelope, not a global genus duration or chelicerate divergence time.
claim:taxon:mollisonia:fossil-range