"2008-11-19" . "The specific nature of the data record." . . . "DataSets/DataSet/Units/Unit/RecordBasis" . "Recommended best practice is to use a controlled vocabulary such as the list of Darwin Core classes. Examples: \"PreservedSpecimen\", \"FossilSpecimen\", \"LivingSpecimen\", \"HumanObservation\", \"MachineObservation\"" . . "recommended" . . "Basis of Record" . "2014-10-23" . . .