88 



CUFFEY AND COX 



TABLE 1 (cont'd) 



Systematics 



Biogeography* 



Ecologyt 



Family CLEIDOCHASMATIDAE 

 ^Cleidochasma porcellanum 



HippoporeUa spinigera 

 Family MICROPORELLIDAE 



Fenestrutina malusii 

 Family RETEPORIDAE (encrusting species) 



Drepanophora incisor 



D tuberculata 

 ^Rhi/nchozoon curtum 



R. solidum 



Family RETEPORIDAE (fenestrated species) 



Tripbiillozoon cuspidatum 

 Family SAVIGNYELLIDAE 



Sauignvelh lafontii 

 Family TETRAPLARIIDAE 



Tetraplaha ueleroae 

 Family TUBUCELLARUDAE 



Tubucelhria fusiformis 



Class STENOLAEMATA 

 Order CYCLOSTOMIDA 

 Suborder TUBULIPORINA 



Family DIASTOPORIDAE 



Stomatopora cf. grandipora 

 Family TUBULIPORIDAE 

 Idmidronea flexuosa 

 Phtonea philippsae 

 Tubiilipora pulcherrima 



Family ONCOUSOECIIDAE 



Oncousoecia cf. abrupta 



Proboscina cf. dichotoma 

 Family DIAPEROECIIDAE 



Diaperoecia aff. rosea 



Suborder ARTICULINA 

 Family CRISIIDAE 

 Crista elor\gata 

 C. cf. fcergue/ensis 



Suborder RECTANGULINA 



Family LICHENOPORIDAE 

 Disporelh cf. buski 

 Lichenopora ryovazelandiae 



P,C 



p 

 P,I 



p 

 p 



P,I,C 



p,l 



P,C 



p,l 



OI;d 



Lg;d 



OI,Lg;d,s 



Lg;d,s 



OI,Lg;d,s 

 OI,Lg;d,s 



OI,Lg;d,s 



01,Lg;d,s 

 0l,Lg;d,s 



Lg;d 

 Lg;d 



"Geograpfiy: P, Pacific Ocean; I, Indian Ocean; C, Caribbean and western Atlantic; E 

 Enewetak endemic; F, previously known only as fossils. 



fEcozone: 01, Ow, oceanward reefs on leeward or windward sides of atoll, respectively 

 lagoonal reefs. Depth: d, deep reefs; s, shallow reefs; f, reef flats. 



ifThe several most conspicuous species on Enewetak (Figs. 1 and 2). 



Lg, 



in outline, but always small and much rarer, are thin 

 encrusting disks, lichenoporid cyclostomes. Also along the 

 substrate are encrusting threads (aeteid cheilostomcs, dias- 

 toporid cyclostomes); encrusting branches (some tubuli- 

 porine cyclostomes); and recumbent, though slightly 

 elevated, branching tubes (other tubulip)orine cyclostomes; 

 Cuffey, 1985). Erect rigid lattices are certain reteporid 

 cheilostomes (Cuffey and McKinney, 1982). Erect flexible 



or jointed tufts include both extremely delicate crisiid 

 cyclostomes and somewhat more robust cheilostomes (cel- 

 lularine, savignyellid, cheiloporinid, and tubucellariid 

 cheilostomcs). None of the Enewetak reefal bryozoans 

 were observed to grow as erect cylindrical or flattened 

 branches. 



All the Enewetak bryozoans mentioned above are geo- 

 logically modern. Deep drilling into the late Cenozoic 



