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Raising the Standard in Fossil Calibration

The Fossil Calibration Database is a curated collection of well-justified calibrations, including many published in the journal Palaeontologia Electronica. We also promote best practices for justifying fossil calibrations and citing calibrations properly.

CLADE SUBMITTED: Gnathostoma
nameToSourceNodeInfo('Gnathostoma') return this node_data:
Array ( [taxonid] => 61463 [source] => NCBI )
nameToMultitreeID('Gnathostoma') returns ID:
-1376
QUERY:
SELECT DISTINCT calibration_id FROM calibrations_by_NCBI_clade WHERE clade_root_multitree_id = '-1376' AND calibration_id IN (SELECT CalibrationID FROM calibrations WHERE PublicationStatus = 4)

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