1 10 12 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/7b252775fe5774ac0e6f189a876ef478.png f27686a548f58cf963ad650803c63a49 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/6f44f891381453ee72b92e9a635804a4.png 6d2e3c3efd2d3f006cba76486b1884b4 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>TF0403<br /></strong></h2> <h2>Belemnite</h2> Subject The topic of the resource <div class="element"> <h3>Location</h3> <div class="element-text">Oxford Clay, Warboys Pit, St Ives</div> </div> <div class="element"> <h3></h3> </div> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Hastatus</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: Mollusca<br />Class: Cephalopoda<br />Order: Belemnitida<br />Genus: Hibolites</div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">'Bullet' shape<br />Guard with radial crystals<br />Hollow phragmocone area</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Mineral replacement of calcitic guard<br />Dissolution of aragonitic phragmocone<br />Sediment infil of phragmocone area</div> </div> <div class="element"> <h3>Advanced notes</h3> <div class="element-text">Hibolites are not as bullet shaped as most belemnites, and at first glance could be confused with an Echinoid spine. However the radial arrangement of crystals and the presence of a hollow region where the phragmocone would once have been allows us to, after some examination, confirm these specimens as belemnites.</div> </div> Calcite Jurassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/d334c4736d6513fda605078c572ddbf5.png 3c392d716531aaa8f19afa4fbe480c0b https://wserv3.esc.cam.ac.uk/p1acollections/files/original/407f961fcb61f2f32904876c37ec609b.png f27d2d0fce5076bb235ad1dda673a23a 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>TF0402<br /></strong></h2> <h2>Belemnite</h2> Description An account of the resource <div class="element"> <h3>Stratigraphic Range</h3> <div class="element-text">Carboniferous to Cretaceous</div> </div> <div class="element"> <h3>Taxonomy</h3> <div class="element-text">Phylum: Mollusca<br />Class: Cephalopoda<br />Order: Belemnitida<br /><br />Set 1:<br />Group: Cylindroteuthis<br />Set 2:<br />Group: unknown</div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Guard with radial calcite crystals<br />Crushed conical hole where phragmocone used to be<br />Long, near cylindrical shape</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Dissolution of phragmocone<br />Sediment infill of conical cavity where phragmocone used to be<br />Crushing of infilled phragmocone area</div> </div> Carboniferous Cretaceous Jurassic Permian Triassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/0bff3979aaa02b655e03f0244e6e8652.png a2542186f8fd5df501c68b5c857a684e https://wserv3.esc.cam.ac.uk/p1acollections/files/original/522ed4d8bd22839e1d69d88433a5237a.png f1065aa2b9e620e4759d55e98df3fb3e 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>TF0401<br /></strong></h2> <h2>Belemnite</h2> Description An account of the resource <div class="element"> <h3>Stratigraphic Range</h3> <div class="element-text">Carboniferous to Cretaceous</div> </div> <div class="element"> <h3>Taxonomy</h3> <div class="element-text">Phylum: Mollusca<br />Class: Cephalopoda<br />Order: Belemnitida</div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Guard of radial calcite crystals<br />Conical cavity where phragmocone used to be</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Aragonitic phragmocone dissolved<br />Sediment infil of conical cavity where phragmocone used to be (set 1 only)</div> </div> Carboniferous Cretaceous Jurassic Permian Triassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/6009607451cd8aaf8df0774b2bdfdcde.png 8b21689fe4d996882b7eb68bf7e6ebbf 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 Fossils Description An account of the resource <p>Welcome to the fossils section of the website. This is designed to help you learn the different characteristics of each major fossil group so that you are able to distinguish between them.</p> <p>First year students, please refer to the specimens housed in the first year teaching laboratory. There is no substitute for handling the specimens themselves; this website is just an accessory to help you along the way.</p> <p>Animals occupy different environments, have different life habits and lived through different periods in geological time. It is good to be aware of these differences in lifestyle and timing, within and between phyla, classes, orders and families.</p> 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>Belemnite</h2> Description An account of the resource <div> <div class="element-set"> <div class="element"> <div class="element-text"> <h2>Taxonomy<span><br /></span></h2> <p>Phylum: Mollusca</p> <p>Class: Cephalopoda</p> <p>Subclass: Coleoidea</p> <p>Cohort: Belemnoidea</p> <h2>Diagnostic Features</h2> <p>Diagram with labelled features of belemnites</p> <p>'Bullet' shape</p> <p>Phragmocone: chambers divided by aragonitic septa (often preserved as conical cavity)</p> <p>Radial calcite crystals form the guard</p> <h2>Way of life</h2> <p>Nektonic</p> <p>Predatory</p> <p>Marine</p> <h2>Advanced notes</h2> <p>Exceptional preservation of belemnites showing soft parts has shown them to be very similar to squid in shape. The guard and phragmocone were held inside the soft parts of the animals, acting as a kind of backbone.</p> <p>Because the phragmocone is made of aragonite it is often not preserved. In contrast the calcitic guard is very often preserved. This means that a common preservation of belemnites is of the guard with a conical hole where the phragmocone once was. This empty conical chamber is often crushed.</p> <h2>Specimens</h2> <p><a href="/p1acollections/exhibits/show/belemnites" target="_blank" rel="noreferrer noopener">Browse belemnites</a></p> <h2>External Links</h2> <p><a href="http://www.conchsoc.org/MolluscWorld20/7">Mollusc World</a></p> <p><a href="https://www.digitalatlasofancientlife.org/learn/nature-fossil-record/types-of-fossil-preservation/">Learn about types of preservation</a></p> </div> </div> </div> </div> Cretaceous Jurassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/e82f884cdfcbcf0c5b784213fb159ef1.png 806574debb150c7909664efee6138600 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/28a1fb886f7368006421315c7a409b82.png 4fbffbc82465ad32a511bfcc397b9055 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/b991dbe90d1c1ca1df17fa3af77186f4.png 3955766fe671a8996a6acde655145297 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 Fossils Description An account of the resource <p>Welcome to the fossils section of the website. This is designed to help you learn the different characteristics of each major fossil group so that you are able to distinguish between them.</p> <p>First year students, please refer to the specimens housed in the first year teaching laboratory. There is no substitute for handling the specimens themselves; this website is just an accessory to help you along the way.</p> <p>Animals occupy different environments, have different life habits and lived through different periods in geological time. It is good to be aware of these differences in lifestyle and timing, within and between phyla, classes, orders and families.</p> 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>Ammonoid</h2> Description An account of the resource <h2>Taxonomy</h2> <p>Phylum: Mollusca</p> <p>Class: Cephalopoda</p> <p>Subclass: Ammonoidea</p> <h2>Diagnostic features</h2> <p>[See labelled diagram above]</p> <p>Aragonite shell</p> <p>Septa</p> <p>Suture (different for goniatites, ceratites and ammonites, see second diagram above)</p> <p>Chambers</p> <p>Siphuncle</p> <p>Planispiral shape, involute or evolute (see third diagram on right hand side)</p> <h2>Stratigraphic range</h2> <p>Devonian to Cretaceous</p> <h2>Way of life</h2> <p>Nektonic (jet propelled)</p> <p>Predatory</p> <p>Marine</p> <h2>Common preservation</h2> <p>Internal mould</p> <p><a href="https://www.digitalatlasofancientlife.org/learn/nature-fossil-record/types-of-fossil-preservation/">Learn about types of preservation</a></p> <h2>Advanced notes</h2> <p>Ammonoids could passively remove or add water to chambers via the siphuncle. This allowed them to change their density, and maintain neutral buoyancy with the surrounding seawater. This meant that they were able to swim as efficiently as possible.</p> <p>Ammonoids are extremely good index fossils on account of their diverse morphologies, good preservation potentials and widespread fossil locations.</p> <h2>Specimens</h2> <p><a href="/p1acollections/exhibits/show/ammonoids" target="_blank" rel="noreferrer noopener">Browse ammonoids</a></p> <h2>External links</h2> <p><a href="https://www.youtube.com/watch?v=2ilSDcZAXNM" target="_blank" rel="noreferrer noopener">Telling planispiral fossils apart</a></p> Carboniferous Cretaceous Devonian Jurassic Permian Triassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/f808e3ec0d833eff8e232581503399ec.png 3549fe4d6f9b46f0de935398436ed6e0 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/7f5bf0ca9ff1f619804426b9ed0efd9f.png f6fa66594cb2a1ebb944762131f31d84 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>TF0331<br /></strong></h2> <h2>Ammonite Aptychus</h2> Subject The topic of the resource <h3>Location</h3> <span>Kimmeridge Clay, Roslyn Pit, Ely</span> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">latus Parkinson</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: Mollusca<br />Class: Cephalopoda<br />Subclass: Ammonoidea<br />Order: Ammonitida</div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Straight edge<br />Growth lines<br />Curved plate</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Calcite<br />Disarticulated from ammonite shell</div> </div> <div class="element"> <h3>Advanced notes</h3> <div class="element-text">One could be forgiven for thinking, at first glance, that this was the valve of a bivalve mollusc. However further interrogation of the fossil: the shape, the fact that the growth lines are on one side of the shell but there is no sign of adductor muscle scars, palial sinuses or other characteristic bivalve signs, and the 'bobbled' texture on the plate, leads us to the conclusion that this is not from a bivalve.<br /><br />Rare examples of ammonite shells with aptychi preserved articulated have shown these plates to be located in the body chamber of ammonites. Upon death most pairs of aptychi disarticulate and hence they are found as single plates, such as this one.</div> </div> fingernail Jurassic smooth https://wserv3.esc.cam.ac.uk/p1acollections/files/original/d16f3b3d71a409a57c0a7dc09f31c578.png cb52ae48865e260402e116ce97555f25 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/c37ac40f520f5b697df901a09bf4543e.png 49c8451be4dd075e44f0546fc7fbf248 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>TF0321<br /></strong></h2> <h2>Ammonite</h2> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Dactylioceras commune</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: Mollusca<br />Class: Cephalopoda<br />Subclass: Ammonoidea<br />Order: Ammonitida<br /><br /></div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Ribs<br />Imprint of inner whorls visible<br />Curved shape (part of coil)</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Pyritised shell replacement</div> </div> Jurassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/bd55e697b4a4dfca85badc4739571904.png c7ed5a2e9fd0159645b1431c3cdd2ca7 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/acd37426f2c975b764eb0af5fa2d8694.png 53bf17c2f264c97aa33c1586d41fd7bc 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>TF0322<br /></strong></h2> <h2>Ammonite</h2> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Hildoceras bifrons</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: Mollusca<br />Class: Cephalopoda<br />Subclass: Ammonoidea<br />Order: Ammonitida</div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Planispiral<br />Evolute<br />Ribs</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Mineral replacement of shell (aragonite to silica)</div> </div> Jurassic https://wserv3.esc.cam.ac.uk/p1acollections/files/original/40cb75eae11af32a0de3c8903284bb97.png 397453cebe3f0e1234d09f7db5a316ba https://wserv3.esc.cam.ac.uk/p1acollections/files/original/882f798c3216556110c2b7d7a757cb60.png 2aa1714c226dd063819489d852cd8be9 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>TF0323<br /></strong></h2> <h2>Ammonite</h2> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Parkinsonia parkinsonia</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: Mollusca<br />Class: Cephalopoda<br />Subclass: Ammonoidea<br />Order: Ammonitida<br /><br /><br /></div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Planispiral<br />Evolute<br />Ribs<br />Ammonitic suture lines</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Calcite has replaced aragonite in the skeleton</div> </div> <div class="element"> <h3>Advanced notes</h3> <div class="element-text">Beware! The specimen in set 2 has a dark circular hole, which you may be tempted to identify as a siphuncle. However remember that in ammonoids the siphuncle runs around the outer edge of the chambers, so this hole is in the wrong place. It is probably there due to eccentricities of the mineralisation process.<br /><br />Why is it a dark colour when the rest of the shell is white? Generations of Earth Scientists have made the same mistake, their pencil marks fooling others into making the same error.</div> </div> Jurassic suture https://wserv3.esc.cam.ac.uk/p1acollections/files/original/927f8fe99cb56579e9f3314a48c3ba97.png f120287b0ec1334cb33c4b2d98654802 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/1dc09457e504e34107e00bfe23fc5a88.png bd0252a16a388518c1c8ba18a3518358 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>TF0324<br /></strong></h2> <h2>Ammonite</h2> Description An account of the resource <div class="element"> <h3>Species</h3> <div class="element-text">Amoeboceras alternans</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: Mollusca<br />Class: Cephalopoda<br />Subclass: Ammonoidea<br />Order: Ammonitida<br /><br /><br /></div> </div> <div class="element"> <h3>Distinctive Features</h3> <div class="element-text">Planispiral<br />Ammonitic suture lines visible on some moulds<br />Ribs</div> </div> <div class="element"> <h3>Preservation</h3> <div class="element-text">Most external moulds, few examples of internal moulds, pyritised</div> </div> Jurassic suture