div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document2017-11-14-kesling-1963-1966-suggested-that-the-class-cyclocystoidea-was-derivedhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · 2017-11-14 · Kesling 1963 1966 suggested that the class Cyclocystoidea was derived from a diplopore-bearing cystoid ancestor resembling the mid-Ordovician genus Tholocystis loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220420095e714d15cc3c35085d2b5858html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document2017-11-14-kesling-1963-1966-suggested-that-the-class-cyclocystoidea-was-derivedhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · 2017-11-14 · Kesling 1963 1966 suggested that the class Cyclocystoidea was derived from a diplopore-bearing cystoid ancestor resembling the mid-Ordovician genus Tholocystis loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220420095e714d15cc3c35085d2b5858html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document2017-11-14-kesling-1963-1966-suggested-that-the-class-cyclocystoidea-was-derivedhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · 2017-11-14 · Kesling 1963 1966 suggested that the class Cyclocystoidea was derived from a diplopore-bearing cystoid ancestor resembling the mid-Ordovician genus Tholocystis loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...