Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Tardigrada
Classis: Eutardigrada
Ordo: Parachela
Superfamiliae (5): Eohypsibioidea - Hypsibioidea - Isohypsibioidea - Macrobiotoidea
Familia incertae subfamiliae: Beornidae – Necopinatidae
Genus incertae familiae: Apodibius
Overview of familiae
Calohypsibiidae - Eohypsibiidae - Hypsibiidae - Isohypsibiidae - Macrobiotidae - Microhypsibiidae - Murrayidae - Necopinatidae - Ramazzottidae - †Beornidae
References
Guidetti, R. and Bertolani, R., 2005. Tardigrade taxonomy: an updated check list of the taxa and a list of characters for their identification. Zootaxa, issue 845: 1–46.
Marley, N.J.; McInnes, S.J.; Sands, C.J. 2011: Phylum Tardigrada: A re-evaluation of the Parachela. Zootaxa, 2819: 51–64. Preview PDF
Schuster, R.O., Nelson, D.R., Grigarick, A.A., and Christenberry, D., 1980. Systematic Criteria of the Eutardigrada. Transactions of the American Microscopical Society, vol. 99 , no. 3: 284–303. [1]
Links
Degma, P., Bertolani, R., Guidetti, R., 2010. Actual checklist of Tardigrada species (Ver. 12: 16–04-2010). [2]
Links
Zicha, Ondřej et al. Parachela (Schuster) – Taxon details on Biological Library (BioLib).
Parachela (Schuster) – Taxon details on Integrated Taxonomic Information System (ITIS).
Parachela (Schuster) Taxon details on Fauna Europaea
Parachela is an order of tardigrades in the class Eutardigrada. Members of this order have existed for at least 72 million years, including the present. The oldest known species is Beorn leggi.[2]
Superfamilies and families
The order includes the following superfamilies and families:
Eohypsiboiidea
Eohypsibiidae
Hypsibioidea
Calohypsibiidae
Hypsibiidae
Microhypsibiidae
Ramazzottiidae
Isohypsibioidea
Hexapodibiidae
Isohypsibiidae
Macrobiotoidea
†Beornidae
Macrobiotidae
Murrayidae
Necopinatidae
Richtersiidae
References
Budd, G. (2001). "Tardigrades as 'Stem-Group Arthropods': The Evidence from the Cambrian Fauna". Zoologischer Anzeiger. 240 (3–4): 265–279. doi:10.1078/0044-5231-00034. ISSN 0044-5231.
Cooper, Kenneth W. (1964). "The First Fossil Tardigrade: Beorn Leggi Cooper, From Cretaceous Amber". Psyche: A Journal of Entomology. 71 (2): 41–48. doi:10.1155/1964/48418.
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