1 10 1 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/ac8725dd28db57aa5f5e14ea34391956.png 693c2200f318d8d5a71d9a40646d1ad3 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/6d18adbac164fbef9cf72b85e3d678d8.png a1c39cc60700bd22e052d74e18736bfc Physical Object An inanimate, three-dimensional object or substance. Note that digital representations of, or surrogates for, these objects should use Moving Image, Still Image, Text or one of the other types. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource <h2><strong>TF0901<br /></strong></h2> <h2>Regular echinoid spine</h2> Subject The topic of the resource <h3>Location</h3> <div class="element-text">Coral Rag, Upware, Cambridgeshire</div> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Florigemma</div> </div> <div class="element"> <h3>Stratigraphic Range</h3> <div class="element-text">Jurassic</div> </div> <div class="element"> <h3>Taxonomy</h3> <div class="element-text">Phylum: Echinodermata<br />Class: Echinoidea<br />Order: Cidaroida<br />Genus: Cidaris<br /><br /></div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">'Club' shaped<br />Thorns</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Mineral replacement (calcite)<br />Disarticulated from body shell</div> </div> <div class="element"> <h3>Advanced notes</h3> <div class="element-text">This is a spine from a regular echinoid. You can tell this by the shape and thickness of the spine.<br />Irregular echinoids live under the sediment in burrows, using their spines for movement, not for protection, and hence the spines are fine and able to be manipulated.<br />Regular echinoids live epifaunally, and so are a target for predators. These spines are needed to prevent attack of the shell containing the soft parts of the animal, and the 'club' like shape decreases access opportunities for predators. Other regular echinoid spines are long and thin, pointed, offering a more 'offensive defence' than spines such as this one.</div> </div> epifaunal protection