dcsimg

    Body symmetry

  • bilaterally symmetric
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  • conservation status

  • endangered
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  • habitat

  • freshwater habitat
    • URI: http://purl.obolibrary.org/obo/ENVO_00002037
    • Definition: A habitat that is in or on a body of water containing low concentrations of dissolved salts and other total dissolved solids (<0.5 grams dissolved salts per litre).
    • Comment: Ontology Description: http://environmentontology.org/ Ontology Source: http://envo.googlecode.com/svn/trunk/src/envo/envo.owl
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  • locomotion

  • walking
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    (adult)
  • tail-flipping
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    (adult)
  • drag powered swimming
    • URI: https://eol.org/schema/terms/drag_based_swimming
    • Definition: Drag swimmers use a cyclic motion where they push water back in a power stroke, and return their limb forward in the return or recovery stroke. When they push water directly backwards, this moves their body forward, but as they return their limbs to the starting position, they push water forward, which will thus pull them back to some degree, and so opposes the direction that the body is heading. This opposing force is called drag. The return-stroke drag causes drag swimmers to employ different strategies than lift swimmers. Reducing drag on the return stroke is essential for optimizing efficiency.
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    (adult)
  • mineralized skeleton contains

  • calcite
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  • calcium carbonate
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  • calcium phosphate
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  • population trend

  • Unknown
  • type specimen repository

  • national museum of natural history, smithsonian institution (usnm)
    • URI: http://biocol.org/urn:lsid:biocol.org:col:34871
    • Definition: National Museum of Natural History, Smithsonian Institution (USNM), Washington, District of Columbia, USA.\r\nNMNH and USNM both refer to the National Museum of Natural History. Collections are associated with one or the other acronym. US, the US National Herbarium, is a collection within the National Museum of Natural History. URL for main institutional website, http://www.mnh.si.edu/rc/\r\nURL for institutional specimen catalog, http://collections.mnh.si.edu/
    • Comment: Ontology Description: http://grbio.org/
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    (male and female, juvenile)
  • national museum of natural history, smithsonian institution (usnm)
    • URI: http://biocol.org/urn:lsid:biocol.org:col:34871
    • Definition: National Museum of Natural History, Smithsonian Institution (USNM), Washington, District of Columbia, USA.\r\nNMNH and USNM both refer to the National Museum of Natural History. Collections are associated with one or the other acronym. US, the US National Herbarium, is a collection within the National Museum of Natural History. URL for main institutional website, http://www.mnh.si.edu/rc/\r\nURL for institutional specimen catalog, http://collections.mnh.si.edu/
    • Comment: Ontology Description: http://grbio.org/
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    (female)
  • national museum of natural history, smithsonian institution (usnm)
    • URI: http://biocol.org/urn:lsid:biocol.org:col:34871
    • Definition: National Museum of Natural History, Smithsonian Institution (USNM), Washington, District of Columbia, USA.\r\nNMNH and USNM both refer to the National Museum of Natural History. Collections are associated with one or the other acronym. US, the US National Herbarium, is a collection within the National Museum of Natural History. URL for main institutional website, http://www.mnh.si.edu/rc/\r\nURL for institutional specimen catalog, http://collections.mnh.si.edu/
    • Comment: Ontology Description: http://grbio.org/
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    (male)
  • national museum of natural history, smithsonian institution (usnm)
    • URI: http://biocol.org/urn:lsid:biocol.org:col:34871
    • Definition: National Museum of Natural History, Smithsonian Institution (USNM), Washington, District of Columbia, USA.\r\nNMNH and USNM both refer to the National Museum of Natural History. Collections are associated with one or the other acronym. US, the US National Herbarium, is a collection within the National Museum of Natural History. URL for main institutional website, http://www.mnh.si.edu/rc/\r\nURL for institutional specimen catalog, http://collections.mnh.si.edu/
    • Comment: Ontology Description: http://grbio.org/
    show all records
    (male)
  • national museum of natural history, smithsonian institution (usnm)
    • URI: http://biocol.org/urn:lsid:biocol.org:col:34871
    • Definition: National Museum of Natural History, Smithsonian Institution (USNM), Washington, District of Columbia, USA.\r\nNMNH and USNM both refer to the National Museum of Natural History. Collections are associated with one or the other acronym. US, the US National Herbarium, is a collection within the National Museum of Natural History. URL for main institutional website, http://www.mnh.si.edu/rc/\r\nURL for institutional specimen catalog, http://collections.mnh.si.edu/
    • Comment: Ontology Description: http://grbio.org/
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    (male and female, juvenile)
  • visual system

  • reflecting superposition eyes
    • URI: https://eol.org/schema/terms/reflecting_superposition_eyes
    • Definition: superposition compound eyes where each ommatidium is equipped with a set of plane mirrors, aligned at right angles, forming a square. Rays entering the eye at an oblique angle encounter two surfaces of each mirror box rather than one surface. In this case, the pair of mirrors at right angles acts as a corner reflector. Corner reflectors reflect an incoming ray through 180 degrees, irrespective of the ray’s original direction. This ensures that all parallel rays reach the same focal point and means that the eye as a whole has no single axis, which allows the eye to operate over a wide angle.
    • Attribution: https://www.britannica.com/science/photoreception/Superposition-eyes#ref278829
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  • apposition eyes
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    (larval)
  • reflecting superposition eyes
    • URI: https://eol.org/schema/terms/reflecting_superposition_eyes
    • Definition: superposition compound eyes where each ommatidium is equipped with a set of plane mirrors, aligned at right angles, forming a square. Rays entering the eye at an oblique angle encounter two surfaces of each mirror box rather than one surface. In this case, the pair of mirrors at right angles acts as a corner reflector. Corner reflectors reflect an incoming ray through 180 degrees, irrespective of the ray’s original direction. This ensures that all parallel rays reach the same focal point and means that the eye as a whole has no single axis, which allows the eye to operate over a wide angle.
    • Attribution: https://www.britannica.com/science/photoreception/Superposition-eyes#ref278829
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    (larval)