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Fossil samples stored in the main Annex building cabinets. Primarily invertebrates collected by survey staff, this collection is a good representation of fossils from geographic areas and stratigraphic units in Illinois. The majority of samples are not cataloged; however most are physically arranged chronostratigraphically. Approximately 150,000 samples total, primarily Cambrian (1500), Ordovician (15,000), Silurian (17,000), Devonian (10,000), Mississippian (15,000), Pennsylvanian (77,000), and Tertiary/Cretaceous (100). Approximately 10,000 specimens are arranged by taxonomic group including brachiopods (7500), cephalopods (1000), and trilobites (2000). Paleontological Specimens - Annex Main A student is currently...
Invertebrate fossil, GSA Mesozoic number 1999, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 3 specimen(s) of the Oyster Paranomia scabra Morton from the Cretaceous Demopolis Chalk Formation in Sumter County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 4538, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Bivalve Unidentified genus from the Cretaceous Ripley Formation in Barbour County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 4789, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Gastropod Unidentified genus from the Cretaceous Ripley Formation in Barbour County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 4885, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Ammonites Eutrephoceras dekayi from the Cretaceous Ripley Formation in Lowndes County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 3658, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 7 specimen(s) of the Mixed mollusks Unidentified genera from the Cretaceous Ripley Formation in Lowndes County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 2804, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains >10 specimen(s) of the Mixed mollusks Unidentified genera from the Cretaceous Coffee Sand Formation in Lee County, MS, USA.
Invertebrate fossil, GSA Mesozoic number 3889, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Worms Hamulus onyx from the Cretaceous Ripley Formation in Sumter County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 2824, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Oyster Unidentified genus from the Cretaceous Mooreville Formation in Dallas County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 2882, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Bivalve Inoceramus unidentified species from the Cretaceous? Formation in County, , Undetermined location.
Invertebrate fossil, GSA Mesozoic number 2952, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Rudist Radiotilidae unidentified species from the Cretaceous Mooreville Formation in Undetermined County, MS, USA.
Invertebrate fossil, GSA Mesozoic number 1573, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Gastropod Turrilites bosquensis (Adkins) from the Cretaceous Del Rio Clay Formation in Bell County, TX, USA.
Invertebrate fossil, GSA Mesozoic number 1582, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 6 specimen(s) of the Ammonite Requienia patagiata (White) from the Cretaceous Deep Eddy Bluff Formation in Undetermined County, TX, USA.
Invertebrate fossil, GSA Mesozoic number 491, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 8 specimen(s) of the Oyster Exogyra costata from the Cretaceous Prairie Bluff Formation in Sumter County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 426, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 6 specimen(s) of the Bivalve Plicatula saffordi from the Cretaceous? Formation in County, , Undetermined location.
Invertebrate fossil, GSA Mesozoic number 461, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Gastropod Xenophora leprosa Morton from the Cretaceous Prarie Bluff Chalk Formation in Marengo County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 472, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 3 specimen(s) of the Gastropod Unidentified genus from the Cretaceous Prairie Bluff Formation in Marengo County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 406, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 10 specimen(s) of the Bivalve Terebratulina floridane from the Cretaceous Ripley Formation in Marengo County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 1021, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Gastropod Unidentified genus from the Cretaceous? Formation in Marengo County, AL, USA.
Invertebrate fossil, GSA Mesozoic number 1032, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains >20 specimen(s) of the Bivalve Unidentified genus from the Cretaceous? Formation in Marengo County, AL, USA.


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