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The evolutionary species Atopochara trivolvis represents a unique case of a charophyte with a well-documented, long-lasting fossil record of biostratigraphical interest and a worldwide distribution. This provides an excellent basis for analysing the historical biogeography of this important species. The origin of the lineage is recorded in the Early Berriasian of Western Europe, where an archipelago-like...
Individuals of the cosmopolitan ophiuroid Amphipholis squamata were collected from eight stations. Eleven colour varieties were described and their distribution was non-random among stations. This suggests that the varieties differ in ecophysiologic tolerance and that their geographical distribution is modulated by environmental conditions. Varieties also differed in bioluminescence. Contrary to kinetics,...
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