. Bulletins of American paleontology. 44 Bulletin 296. Text-fig. 9. Five general basal plate shapes in cincinnaticrinaceans and homocrinaceans. a—distaily expanding, symmetrically pentagonal {Cincinnaticrinus varibrachia- lus, Isotomocrinus tenuis, Atopocrinus priscus, and Homocrinus parvus), b— parallel-sided, symmetrically pentagonal (C. pentagonus, Ohtocrlnus laxus— also e in some members, O. brauni, Dardalocrinus bellevillcnsis, Ectenocrinus simplex, E. geniculatus, and Sygcaulo-crir/us typus — in the case of the last three, only the AB interray B). c—asymmetrically pentagonal with one ste
. Bulletins of American paleontology. 44 Bulletin 296. Text-fig. 9. Five general basal plate shapes in cincinnaticrinaceans and homocrinaceans. a—distaily expanding, symmetrically pentagonal {Cincinnaticrinus varibrachia- lus, Isotomocrinus tenuis, Atopocrinus priscus, and Homocrinus parvus), b— parallel-sided, symmetrically pentagonal (C. pentagonus, Ohtocrlnus laxus— also e in some members, O. brauni, Dardalocrinus bellevillcnsis, Ectenocrinus simplex, E. geniculatus, and Sygcaulo-crir/us typus — in the case of the last three, only the AB interray B). c—asymmetrically pentagonal with one steeply sloping and one gently sloping upper side {S. typus — all but the AB interray B). d—asymmetrically pentagonal with one steeply sloping and one horizontal upper side (£. simplex and E. geniculatus — in both, all but the AB interray B). e—symmetrically hexagonal {Dystactocrinus constrictus and occasionally O. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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