lagoonaladj.

1910 Encycl. Brit. IX. 663/2 Of the Gasteropod genera Cerithium with its estuarine and lagoonal forms Potamides, Potamidopsis, &c., is very characteristic.

1950 New Biol. 8 92 The earliest known birds were quite small, about the size of a crow, and are known from only two specimens..; even these were preserved in an unique lagoonal environment.

1956 Nature 31 Mar. 607/2 The coral reef was not bottomed, the strata penetrated consisting entirely of fine detrital limestones..originally deposited in lagoonal waters not less than 30 fathoms in depth.

1963 D. W. Humphries & E. E. Humphries tr. H. Termier & G. Termier Erosion & Sedimentation ix. 192 The marine and lagoonal faunas of the Cretaceous in the Gulf of Guinea.

1971 I. G. Gass et al. Understanding Earth xii. 158/2 The reefs and lagoonal sediments which flourished during the Mesozoic and Tertiary periods.

1971 I. G. Gass et al. Understanding Earth xii. 159/1 For the past 50 million years reefs have been very efficient structures leading to the formation of vast lagoonal areas.