Broadhead, T.W.; Sumrall, C.D. (2003). Heterochrony and paedomorphic morphology of Sprinkleocystis ektopios, new genus and species, (Rhombifera, Glyptocystida) from the Middle Ordovician (Caradoc) of Tennessee. Journal of Paleontology, 77 (1), 113-120
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Broadhead, T.W.; Sumrall, C.D.
2003
Heterochrony and paedomorphic morphology of Sprinkleocystis ektopios, new genus and species, (Rhombifera, Glyptocystida) from the Middle Ordovician (Caradoc) of Tennessee.