▁Camp iche ▁( August ▁ 1 8 0 9 , ▁La ▁S agne ▁– ▁ 1 8 7 1 , ▁Sainte - C ro ix ▁in ▁the ▁canton ▁of ▁Va ud ) ▁was ▁a ▁Swiss ▁phys ician ▁best ▁known ▁for ▁his ▁work ▁in ▁the ▁fields ▁of ▁ge ology ▁and ▁pale ont ology . ▁ ▁Initial ly ▁trained ▁as ▁a ▁veter in arian , ▁his ▁interests ▁later ▁switched ▁to ▁medicine , ▁of ▁which , ▁he ▁received ▁a ▁doctor ate ▁at ▁Lyon . ▁After ▁pract icing ▁medicine ▁in ▁the ▁town ▁of ▁Rolle , ▁he ▁re located ▁as ▁a ▁doctor ▁to ▁Sainte - C ro ix ▁in ▁ 1 8 4 7 , ▁where ▁he ▁remained ▁up ▁until ▁his ▁death ▁in ▁ 1 8 7 1 . ▁In ▁ 1 8 6 1 ▁he ▁became ▁a ▁member ▁of ▁the ▁Grand ▁Conseil ▁in ▁the ▁canton ▁of ▁Va ud , ▁and ▁in ▁ 1 8 7 0 ▁received ▁the ▁title ▁of ▁pré f et . ▁ ▁In ▁his ▁spare ▁time , ▁he ▁conducted ▁ge ological ▁and ▁pale ont ological ▁investig ations ▁in ▁the ▁vic inity ▁of ▁Sainte - C ro ix , ▁and ▁in ▁the ▁process ▁collected ▁many ▁foss il ▁bra chi op ods , ▁b ry oz o ans , ▁e ch ino ids ▁and ▁sp ong es . ▁With ▁François - J ules ▁P ict et ▁de ▁la ▁R ive , ▁he ▁described ▁the ▁ext inct ▁g ast rop od ▁gener a ▁Pseud om el ania ▁( 1 8 6 2 ), ▁C rypt op loc