Cordaitean Predation Photos 2019: Unmounted Peels, Wild Cone 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 peels were made by Dr. Anne Raymond and are housed at the Department of Geology and Geophysics at Texas A&M University.
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
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, immature (picture 1); cone B, taphonomically degraded (picture 2, left); cone C, basal section (picture 3, right). A single golden coprolite and 3 brown coprolites were identified in ...
-
(Texas A&M University. Libraries, 2020)A single brown coprolite was identified in the matrix (picture 1). No cordaitean cones were identified in this peel.
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1) is a mature cordaitean cone and cone B (picture 2) is taphonomically degraded. Plate 2B is a successive peel taken from the same coal ball as plate 2A.
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1, left) and cone B (picture 1, right) are mature cordaitean cones.
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, basal section (picture 1, top left); cone B, basal section (picture 1, top, right); cone C, basal section (picture 2, left); cone D, taphonomically degraded (picture 2, right); cone E, ...
-
(Texas A&M University. Libraries, 2020)A mature cordaitean cone (picture 1) containing 3 golden coprolites. Coprolites are are composed of macerated pollen grains of Florinites (picture 2).
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, taphonomically degraded (picture 1); cone B, basal section (picture 2); cone C, basal section (picture 3); cone D, mature (picture 4). A single golden coprolite was identified in the ...
-
(Texas A&M University. Libraries, 2020)A single brown coprolite was identified in the matrix (picture 1). No cordaitean cones were identified in this peel.
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2, left); cone C, basal section (picture 3, bottom left); cone D, mature (picture 3, bottom left); cone E, basal section (picture 3, ...
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, basal section (picture 1); cone B, basal section (picture 2, left); cone C, immature (picture 2, right); cone D, basal section (picture 3). Three brown coprolites were identified in the ...
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2, left); cone C, basal section (picture 2, right). Cone A contained a single golden coprolite within its scales and in the matrix. ...
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, basal section (picture 1, top left); cone B, basal section (picture 1, top, right); cone C, mature (picture 2); cone D, mature (picture 3, middle); cone E, mature (picture 3, right). ...
-
(Texas A&M University. Libraries, 2020)Cone maturity is as follows- cone A, mature (picture 1); cone B, basal section (picture 2, left); cone C, basal section (picture 2, right). Cone A contained a single golden coprolite within its scales. Plate 19A is a ...
-
(Texas A&M University. Libraries, 2020)A mature cordaitean cone containing a single golden coprolite (picture 1), 2 brown coprolites were identified in the matrix (picture 2). Plate 18B is a successive peel taken from the same coal ball as plate 18A.
-
(Texas A&M University. Libraries, 2020)A taphonomically degraded cone with 2 golden coprolite in proximity to the cone (picture 1). A single golden and brown coprolite was identified in the matrix (picture 2).
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1) is a basal section and cone B (picture 2) is taphonomically degraded.
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1) is a mature cordaitean cone and cone B (picture 2) is taphonomically degraded. A golden coprolite was identified in proximity to cone A (picture 1) and a single brown coprolite was identified in the ...
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1) is a mature cone and cone B (picture 2) is a basal section. A single golden coprolite was identified in cone A.
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1) is a mature cone and cone B (picture 2) is an immature cone. A single brown (picture 4) and two golden coprolites (picture 3) were identified in the matrix.
-
(Texas A&M University. Libraries, 2020)Cone A (picture 1, left) is a basal section and cone B (picture 1, right) is taphonomically degraded. A single brown coprolite was identified in the matrix (picture 2).