Parachela (tardigrade)

Short description: Order of tardigrades

Parachela

Temporal range: Campanian–Recent[1]

PreЄ

Hypsibius dujardini
Scientific classification
Kingdom:  | Animalia
Phylum:  | Tardigrada
Class:  | Eutardigrada
Order:  | Parachela
Superfamilies and families

See text

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

1. ↑ 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.
2. ↑ 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.

## External links

Wikidata ☰ Q13419378 entry

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*[†]: Extinct