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With respect to conodonts, calcichordates, etc., we're not talking about very complex Martian "fossils". Nanobacteria-like things at best. And, in many expectations, nanobacteria-like is a pretty good beginning for life. No necessarily complex structures, no necessarily complex ecology (by our standards Today). We're looking at complexity thresholds, isolation from the external environment, acquisition of resources (whatever those may be!) and some form of chemical reproduction and information transmission. Gee, sounds like life. And in its simplest form, anywhere in the Universe, it will probably look like a little membrane bound bag. Dr. Peter D. Roopnarine Department of Biology Southeast Missouri State University Cape Girardeau MO 63701 email:proopnar@biology.semo.edu web:http://biology.semo.edu Dr. Peter D. Roopnarine Department of Biology Southeast Missouri State University Cape Girardeau MO 63701 email:proopnar@biology.semo.edu web:http://biology.semo.edu Dr. Kim Driver Dept. of Biology Southeast Missouri State University One University Plaza M/S 6200 Cape Girardeau MO 63701 e-mail kdriver@biology.semo.edu web http://biology.semo.edu
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