, ▁London ▁ 7 3 , ▁ 2 6 – 5 8 ▁Sw inn erton ▁H . H . ▁( 1 9 2 3 ) ▁Out lines ▁of ▁Pala e ont ology . ▁Third ▁edition . ▁London , ▁Edward ▁Arnold , ▁ 1 9 5 8 . ▁Sw inn erton ▁H . H . ▁( 1 9 3 5 ) ▁ ▁The ▁Ro cks ▁Below ▁the ▁Red ▁Ch alk ▁of ▁Lincoln shire , ▁and ▁Their ▁Ce phal op od ▁Fa unas . ▁ ▁Qu arter ly ▁Journal ▁of ▁the ▁Ge ological ▁Society , ▁London ▁ 9 1 , ▁ 1 – 4 6 . ▁Sw inn erton ▁H . H . ▁( 1 9 3 7 ). ▁A ▁mon ograph ▁of ▁British ▁Lower ▁C ret ace ous ▁be lem n ites . ▁Part ▁ 2 . ▁Mon ograph ▁of ▁the ▁Pala e ont ological ▁Society , ▁ 9 0 ▁( for ▁ 1 9 3 6 ): ▁x vi i - xxx ii ▁+ ▁ 1 7 – 3 0 . ▁Sw inn erton ▁H . H . ▁( 1 9 3 8 ). ▁President ial ▁Address . ▁The ▁Problem ▁of ▁the ▁Lincoln ▁G ap . ▁Trans actions ▁of ▁the ▁Lincoln shire ▁Natural ists ' ▁Union ▁ 9 , ▁ 1 4 5 – 1 5 3 . ▁Sw inn erton ▁H . H . ▁( 1 9 4 1 ). ▁Further ▁observations ▁on ▁the ▁Lower ▁C ret ace ous ▁rocks ▁of ▁Lincoln shire . ▁Pro ceed ings ▁of ▁the ▁Ge olog ists