“…Numerous markers, geophysical and biological, can be analyzed for reconstructing past environments. It should be noted that if some specialized fields such as palynology or archeobotany, for instance, are quite well developed among paleoenvironmental sciences, other such as paleoparasitology are only defended by a very few number of specialists in the world (Bouchet et al 2003), in spite of its anteriority dating from the very emergence of paleopathology, as I mentioned above (Ruffer 1910). …”