Luo, Y.-J.; Takeuchi, T.; Koyanagi, R.; Yamada, L.; Kanda, M.; Khalturina, M.; Fujie, M.; Yamasaki, S.; Endo, K.; Satoh, N. et al.
topology · event-mechanism · methods · range
A 425-Mb Lingula anatina genome sequenced from male-gonad DNA of adults collected at Kasari Bay, combined with RNA-seq spanning embryonic stages and adult tissues and a proteome of adult shells; these are present-day samples, not evidence for lineage origin time.
The 425-Mb Lingula anatina genome, embryonic and adult transcriptomes and shell proteome identify chitin-synthase and BMP-related components alongside lineage-specific shell proteins. BMP activity at larval mantle margins suggests a shared biomineralization mechanism, but its functional role requires further testing; the shell toolkit differs from vertebrate bone.
claim:event:lingula-genome-biomineralizationThe living Lingula anatina genome, staged transcriptomes and shell proteome document a sampled phosphate-shell biomineralization toolkit; they do not demonstrate morphological stasis or the lineage's origin time.
claim:taxon:lingula-anatinaLuo et al. document living gravid Lingula anatina adults collected in July and August at Kasari Bay with exact coordinates, so 0 Ma denotes that present-day collection only and does not date lineage origin, fossil duration or morphological stasis.
claim:taxon:lingula-anatina:source-bounded-range-rc50