Overview

Brief Summary

Eutardigrades (Class Eutardigrada)

Eutardigrades have existed since the Cretaceous (1). These tardigrades lack lateral appendages, such as sensory cephalic appendages and club-shaped appendage. They mainly live in freshwater bound, but Halobiotus has become adapted to live in marine environments. Many species use cryptobiosis to live temporarily in very dry environments. There are more than 700 species have been described.[2]

The order Apochaela has one family, Milnesiidae. This includes Milnesium tardigradum, which resembles species found in Cretaceous amber (1). Other eutardigrades belong to the order Parachaela.

  • 1. Budd, G. (2001). "Tardigrades as 'Stem-Group Arthropods': The Evidence from the Cambrian Fauna". Zoologischer Anzeiger - A Journal of Comparative Zoology 240 (3–4): 265–279. doi:10.1078/0044-5231-00034. ISBN 0044523100034 Check |isbn= value (help). edit
  • 2. Zhang, Z.-Q. (2011). "Animal biodiversity: An introduction to higher-level classification and taxonomic richness". Zootaxa 3148: 7–12.
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Physical Description

Morphology

Sexual Dimorphism

Sexual Dimorphism in size (females larger), shape, appendages and gonopores.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:1,022Public Records:333
Specimens with Sequences:636Public Species:33
Specimens with Barcodes:561Public BINs:72
Species:49         
Species With Barcodes:40         
          
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Barcode data

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Eutardigrada

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