▁became ▁an ▁authority ▁on ▁the ▁tax onomy ▁of ▁the ▁tr il ob ite ▁order ▁L ich ida ▁and ▁the ▁tr il ob ite ▁family ▁En cr in ur idae . ▁ ▁Early ▁life ▁ ▁Enc ou rag ed ▁by ▁his ▁school ▁science ▁master , ▁Ron ▁enthus iast ically ▁collected ▁T ert i ary ▁foss ils ▁in ▁Su ff olk . ▁He ▁later ▁collected ▁in ▁the ▁C ret ace ous ▁rocks ▁of ▁Kent ▁and ▁Sus sex , ▁and ▁Ord ov ician ▁rocks ▁of ▁the ▁Gir van ▁area . ▁The ▁latter ▁material ▁was ▁used ▁in ▁the ▁studies ▁of ▁F . R . C . ▁Re ed . ▁He ▁trained ▁as ▁a ▁Sp it fire ▁pilot ▁in ▁World ▁War ▁II , ▁and ▁published ▁his ▁first ▁paper ▁in ▁ 1 9 5 4 ▁on ▁the ▁Ord ov ician ▁tr il ob ites ▁of ▁Gir van . ▁Many ▁other ▁papers ▁would ▁follow . ▁He ▁was ▁employed ▁by ▁British ▁C ake ▁and ▁O ils ▁from ▁early ▁on ▁until ▁about ▁ 1 9 7 0 . ▁ ▁Tre at ise ▁on ▁In verte br ate ▁Pale ont ology ▁ ▁During ▁prepar ation ▁of ▁the ▁first ▁edition ▁of ▁the ▁Tre at ise ▁on ▁In verte br ate ▁Pale ont ology , ▁Cy ril ▁James ▁St ubble field ▁asked ▁Tri pp ▁to ▁step ▁in ▁to ▁write ▁the ▁L ich id ▁section ▁of ▁the ▁Tr il ob ite ▁volume , ▁in ▁place ▁of ▁El sa ▁War burg , ▁who ▁had ▁died ▁before ▁her ▁work ▁was ▁complete . ▁As ▁part ▁of ▁this ▁am bit