Term
|
Definition
| are imprints of the inside of the shell in the rock. |
|
|
Term
|
Definition
| are imprints of the outside of the shell in the rock. |
|
|
Term
|
Definition
| A replica of an object such as a shell or bone formed with a mold of hat object is filled by sediment or minerals. |
|
|
Term
|
Definition
| vertebrata, invertebrata, chordata, echinodermata, lophophorate, arthropoda, mollusca, annedlida, worms, cnidaria, porifera. |
|
|
Term
|
Definition
| Includes Chordata, which have a notochord, dorsal hollow nerve cord, and gill slits at some time during their life cycle. May or may not have a vertebrate. |
|
|
Term
|
Definition
| starfish, sea urchin, sea cucumber. |
|
|
Term
|
Definition
| Superphylum: brachiopoda (lamp shells), bryozoa (moss animals) phoronids |
|
|
Term
|
Definition
| insects, spiders, and crabs |
|
|
Term
|
Definition
| clams, snails, squid, tusks, and chitons |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| hydra, corals, jellyfish, sea anemones |
|
|
Term
|
Definition
|
|
Term
|
Definition
| vertebrata/invertebrata-chordata, echinodermata, lophophorate |
|
|
Term
|
Definition
| arthropoda, mollusca, annelida, worms, cnidaria, porifera |
|
|
Term
|
Definition
| internal mold, external mold, casts, trace, recrystallized, unaltered skeleton, carbonized, pseudofossil, petrification, chemical alteration, coprolite, argonite to calcite, body fossil, burrow |
|
|
Term
|
Definition
| freezing, mummification, preservation in amber, preservationin tar |
|
|
Term
|
Definition
| permineralization, recyrstallization, replacement, carbonization |
|
|
Term
|
Definition
| tracks, trails, burrows, boring, coprolite, gastroliths, rootmarks |
|
|
Term
|
Definition
| volatile elements lost from organic matter leaving a carbon film, most common for leaves and insects |
|
|
Term
|
Definition
| change in the crystal structure: for examle pyrite replaces calcium carbonate of shells |
|
|
Term
|
Definition
| Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in Cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. This is because aragonite is more soluble than calcite, and because aragonite is metastable, and in time recrystallizes to calcite. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| In some embryos, the daughter blastomeres are not direclty over or beside each other. They are tilted to the left or right 45 degrees. This latter cleavage symmetry is said to be spiral. |
|
|
Term
|
Definition
| In some embryos, the daughter blastomeres are either above or to the side of each other. This is said to be radial-type symmetry |
|
|
Term
|
Definition
| molusks, anelieds, arthropoda. concaves like a horseshoe, anus first |
|
|
Term
|
Definition
| Chordata, echinoderms, cat shaped-ish concave, mouth first, then anus. twins possible |
|
|
Term
| determinate vs indeterminate |
|
Definition
| determinate grows then dies like natural fruits, indeterminate grows and grows like a vine and reproduces asexually and doesn't die until frost comes. |
|
|
Term
|
Definition
| Created bell curve graphs for rib numbers and how they deal with change in species in scallops. If the two means overlap, same species. If they do not, different species. |
|
|
Term
|
Definition
| beak, ligament dorsal, cardinal teeth, muscle scars, pallial sinus, pallialline, anterior, ventral, crenulate inner margin, lunule (clit), beaks, escutcheon (vagina) posterior is bottom |
|
|
Term
|
Definition
| depends if the shell can close completely or not to save animal from predators |
|
|
