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 | Pleistocene Echinoids (Echinodermata) From Bermuda And Barbados S K Donovan and B Jones (1994) Proceedings of The Biological Society of Washington 107: 109-113 |
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 | Calocidaris Micans (Cidaridae) And Pseudoboletia Maculata Echinoidea) Of The Gulf Of Mexico R L Turner and B D Graham (2003) Proceedings of The Biological Society of Washington 116: 61-81 |