Published in Bulletin of the Natural History Museum. Geology series., in 1996, in volume 52, pages 1-24

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Published in Proceedings of The Biological Society of Washington, in 1995, in volume 108, pages 491-495

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Published in Biol Bull, in 1997, in volume 193, pages 381-392

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Published in Proceedings of The Biological Society of Washington, in 1989, in volume 102, pages 109-115

Created: 2011-06-10, modified: 2011-06-21