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ITIS DwC-A File Format

To facilitate the exchange of taxonomic data within the biodiversity informatics community the Global Biodiversity Information Facility created Darwin Core Archive (DwCA), a data standard with features that permit exchange of taxonomic data. On the ITIS single name report page of valid or accepted names there is an option to download ITIS data in DwCA format. ITIS DwCA file is a self contained zipped (.zip) archive consisting of three files. The first file, taxa.txt, includes a header row of the fields mapped to the ITIS standards as described in ITIS Darwin Core Archive Layout and Data Application. The second file, meta.xml, describes the core taxa.txt file in terms of the DwCA format. The third file, eml.xml, describes the common attributes of the records in taxa.txt

For complete definitions of ITIS data elements see ITIS Data Model. For a complete list of Darwin Core terms and their definition see the Darwin Core Terms Quick Reference Guide.

ITIS DwCA Record Layout, with field names and descriptions

taxonID
A taxonomic serial number, TSN, assigned for occurrences of Taxonomic Units at each level of the hierarchy through genus and for all polynomial infrageneric Taxonomic Units

acceptedNameUsageID
The TSN of the valid/accepted name used to link a synonym (invalid/ not accepted name) to corresponding name

parentNameUsageID
The TSN of the valid/accepted name that is the direct parent of the subject occurrence in taxonID

scientificName
Full scientific name derived concatenated name elements including taxon authorship if applicable

scientificNameAuthorship
Taxon authorship, formatted per the governing nomenclatural code

kingdom
Kingdom in which the valid/accepted name is classified

phylum
Phylum or Division in which the valid/accepted name is classified

class
Class in which the valid/accepted name is classified

order
Order in which the valid/accepted name is classified

superfamily
Superfamily in which the valid/accepted name is classified

family
Family in which the valid/accepted name is classified

genus
Genus in which the valid/accepted infrageneric name is classified, or the first term of the scientific name for species and below

subgenus
Subgenus in which the valid/accepted name is classified

specificEpithet
The second term of the scientific name for species and below

infraspecificEpithet
The third term of the scientific name for subspecies and below

taxonRank
The rank name for a level in the taxonomic hierarchy

taxonomicStatus
The status of the use of the scientificName

modified
Derived effective date of the record

namePublishedIn
The publication containing the original description

scientificNameID
A taxonomic serial number, TSN, assigned for occurrences of Taxonomic Units at each level of the hierarchy through genus and for all polynomial infrageneric Taxonomic Units

verbatimTaxonRank
Subspecific rank indicator

taxonRemarks
Notes about the taxon or name

higherClassification
Pipe delimited hierarchy from the trunk down to branch immediately superior to scientificName

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