Cordaitean Predation Photos 2019: Mounted Peels, Harvard Collection
This photo collection represents an effort to document pollen predation in cordaitean cones by arthropods in Coal balls from the Williamson No. 3 Mine in Lucas County, Iowa. The collection features cones at different stages of sexual maturity (immature and mature). Two types of coprolites were been identified in cordiatean cones; brown coprolites composed of partially digested vegetative organs and golden coprolites composed of digested pollen grains (Florinites). These mounted peels were made by the late William C. Darrah and his students and are on loan from the Harvard Paleobotanical Herbarium.
The images in this collection were used in the research for a master's thesis in the Department of Geology and Geophysics by Scott Lakeram, "Arthropod Predation of Cordaitean Pollen Cones in Pennsylvanian Coal Balls," submitted in August 2020. To view information about the thesis, go to the following link: https://hdl.handle.net/1969.1/192613.
Recent Submissions
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(Texas A&M University. Libraries, 2019)Cone A (picture 1) and B (picture 3) are mature cordaitean cones, 20 golden coprolites composed of macerated pollen grains of Florinites were identified in cone A (picture 2).
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(Texas A&M University. Libraries, 2019)Cone A (picture 1) and B (picture 2) are mature cordaitean cones, 10 golden coprolites composed of macerated pollen grains of Florinites were identified in cone B (picture 3).
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, basal section (picture 2); cone C, basal section (picture 3). Plate 68B is a successive peel taken from the same coal ball as 68A.
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(Texas A&M University. Libraries, 2019)Cones A (picture 1) and cone B (picture 2) are taphonomically degraded.
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, taphonomically degraded (picture 2). Plate 67C is a successive peel taken from the same coal ball as other plates labeled 67.
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, mature (picture 2). Plate 67B is a successive peel taken from the same coal ball as other plates labeled 67.
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2). A large pollen accumilation (picture 3) of Florintes is at the tip of cone A. Plate 67A is a successive peel taken from the same ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1, top); cone B, taphonomically degraded (picture 1, right); cone C, basal section (picture 1, left). A single golden coprolite was identified in cone C (picture 2).
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2, middle); cone C, immature (picture 3, left); cone D, basal section (picture 3, middle). Cone A contained 2 golden coprolites within ...
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(Texas A&M University. Libraries, 2019)A string of 3 golden coprolites composed of mascerated Florinites near cone A (picture 1 and 3), both cone A (picture 2) and cone B (picture 4) are mature. A pollen mass can be found in the matrix above the coprolite string ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, mature (picture 1); cone B, immature (picture 2); cone C, mature (picture 3).
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, basal section (picture 2); cone C, taphonomically degraded (picture 3); cone D, basal section (picture 4, top), cone E, taphonomically degraded (picture ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, immature (picture 1, top left); cone B, basal section (picture 2, bottom left); cone C, taphonomically degraded (picture, right). A large oblong coprolite (> 1 mm) in the matrix composed ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2). Cone A contained 7 golden coprolites within its cone scales (picture 3).
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, immature (picture 1); cone B, mature (picture 2); cone C, mature (picture 3, top); cone D, mature (picture 3, bottom). Picture 4 depicts pollen grains of Florinites with ruptured trilete ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, taphonomically degraded (picture 1); cone B, mature (picture 2, top); cone C, mature (picture 2, bottom). 3 golden coprolites were identified in the cone B. Plate 60B is a successive ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, mature (picture 2); cone C, basal section (picture 3); cone D, mature (picture 4), cone E, taphonomically degraded (picture 5), cone F, taphonomically ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, basal section (picture 1); cone B, basal section (picture 2); cone C, basal section (picture 3); cone D, immature (picture 4), cone E, taphonomically degraded (picture 5). Plate 59A is ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, taphonomically degraded (picture 1); cone B, mature (picture 2); cone C, mature (picture 3, left); cone D, mature (picture 3, right), cone E, taphonomically degraded (picture 4, top), ...
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(Texas A&M University. Libraries, 2019)Cone maturity is as follows- cone A, taphonomically degraded (picture 1); cone B, mature (picture 2); cone C, mature (picture 3, left); cone D, mature (picture 3, right), cone E, taphonomically degraded (picture 4, top), ...
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