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EOL Dynamic Hierarchy
Currently active Dynamic Hierarchy and archived versions. For more information, see: https://opendata.eol.org/organization/about/dynamic-hierarchy -
TRAM-804 Integrated Taxonomic Information System (ITIS) Taxonomic Hierarchy
Authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world. ITIS ia a partnership of U.S., Canadian, and Mexican agencies... -
NCBI Taxonomy Harvest (TRAM-795)
NCBI hierarchy with many surrogates removed. -
NCBI Taxonomy for DH (TRAM-796)
Bacteria and microbial eukaryote branches from the NCBI taxonomy.