The 450–0 Ma Ostracoda display begins with the first unequivocal pre-Silurian ostracod occurrence and excludes less secure older shell-only assignments.
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References / paperExceptionally Preserved 450-Million-Year-Old Ordovician Ostracods with Brood Care
Siveter, D.J.; Tanaka, G.; Farrell, Ú.C.; et al.
Year2014
Source roleprimary-study
DOI / ID10.1016/j.cub.2014.02.040
Fitness and scope
taxonomy · range · morphology · ecology
Primary description identifies Luprisca as the first unequivocal pre-Silurian ostracod record and cautions against older shell-only assignments.