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Animaliaanimals
Identification
Caption
Stagnicola elodes, S. reflexa and S. exilis. Stagnicola reflexa is actually a form of S. elodes that is one year older than individuals of most populations. In the middle of the last whorl of S. “reflexa” a lighter colored transverse stripe (a varix), marks the size of the shell when it over-wintered. As snails increase in size, the mantle secretes additional shell material at the edge of the mantle bordering the shell aperture. Thus, the shell also increases in size.
- Type
- Photo
- Subject
- Specimen
Contributors
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
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This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
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Classification
- Kingdom Animalia animals
Related Taxa
- Unspecified Annelida segmented worms
- Class Aplacophora
- Unspecified Arthropoda arthropods
- Class Bivalvia
- Class Cephalopoda
- Phylum Chordata chordates
- Cnidaria corals, sea anemones, jellyfish, and relatives
- Echinodermata sea stars, sea urchins, sea cucumbers, and relatives
- Class Gastropoda
- Species Milnesium tardigradum
- Class Monoplacophora
- Phylum Nematoda roundworms
- Species Paragordius varius
- Unspecified Platyhelminthes flatworms
- Class Polyplacophora
- Porifera sponges
- Class Scaphopoda
- Species Symbion pandora
To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2013. The Animal Diversity Web (online). Accessed at http://animaldiversity.org.
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.
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This material is based upon work supported by the National Science Foundation under Grants DUE-0633095 and DRL-0628151.
The ADW Team gratefully acknowledges their support.