<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><div id="gmail-:xmd" class="gmail-Ar gmail-Au gmail-Ao"><div id="gmail-:xm9" class="gmail-Am gmail-Al editable gmail-LW-avf gmail-tS-tW gmail-tS-tY" aria-label="Message Body" role="textbox" aria-multiline="true" tabindex="1" style="direction:ltr;min-height:297px" aria-controls=":xow"><div class="gmail_default"><div id="gmail-:x2n" class="gmail-Ar gmail-Au gmail-Ao"><div id="gmail-:x2j" class="gmail-Am gmail-Al editable gmail-LW-avf gmail-tS-tW gmail-tS-tY" aria-label="Message Body" role="textbox" aria-multiline="true" tabindex="1" style="direction:ltr;min-height:297px" aria-controls=":x56"><div class="gmail_default"><div style="font-family:Arial,Helvetica,sans-serif;font-size:small"><div><div><div><font color="#274e13" face="times new roman, serif" size="4">The CEES Seminar Series presents:</font></div></div></div></div><div style="font-family:Arial,Helvetica,sans-serif;font-size:small"><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><font color="#0b5394"><b><span style="font-size:12pt;line-height:17.12px;font-family:"Times New Roman",serif">Dr. James Thomka</span></b><span style="font-size:12pt;line-height:17.12px;font-family:"Times New Roman",serif">, Assistant Professor Geology, Center for Earth and Environmental Science SUNY Plattsburgh</span></font></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:13.91px;font-family:Calibri,sans-serif"><b><span style="line-height:13.91px;font-family:"Times New Roman",serif;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#274e13" size="4">Parasites of ancient stalked echinoderms: The fossil record, evolutionary significance, and new developments</font></span></b></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:17.12px;font-family:"Times New Roman",serif;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">In spite of the historic emphasis on competition, antagonistic biotic interactions are increasingly recognized as major drivers of long-term and large-scale evolutionary trends. Predator-prey relationships over evolutionary timescales have been extensively studied, but an equally important form of antagonistic interaction--that involving parasites and hosts--remains more poorly understood, primarily because of limitations imposed by biases in the fossil record. Fortunately, stalked echinoderms (pelmatozoans) are characterized by a rare combination of properties that make them ideally suited for study of the effects of host-selective parasitic infestation over deep (i.e., evolutionarily significant) timescales. This presentation focuses on the two most common manifestations of parasitism in pelmatozoan echinoderm hosts: development of swollen pit structures and encrustation by platyceratid gastropods. Morphological, ecological, and other effects driven by parasitism of host lineages are highlighted in the context of evolutionary change.</span><span style="font-size:16pt;line-height:22.8267px;font-family:"Times New Roman",serif"></span></p><div><div><b>Friday Sept 15th </b><b>3:30pm. </b><br></div><div><div><b>Hudson 106</b></div></div><p style="margin-top:0pt;margin-bottom:0pt;margin-left:0in;unicode-bidi:embed;word-break:normal"><br></p></div><div><div><p style="margin-top:0pt;margin-bottom:0pt;margin-left:0in;unicode-bidi:embed;word-break:normal"><b>All seminars are free and open to the public. </b><br></p></div></div><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:17.12px;font-family:"Times New Roman",serif;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"></span></p><div>If you have any questions regarding the seminar please contact Dr. Mark Lesser (<a href="mailto:mless004@plattsburgh.edu" target="_blank">mless004@plattsburgh.edu</a>)</div></div><div style="font-family:Arial,Helvetica,sans-serif;font-size:small"><img src="cid:ii_lmakz5a10" alt="CEES seminar poster_Thomka_Sept15.jpg" width="441" height="331" class="gmail-CToWUd gmail-a6T" tabindex="0" style="cursor: pointer; outline: 0px;"></div></div></div></div></div></div></div></div></div>