PLATE 1. Lepidopora sarmentosa (a, b, holotype, F132; c-g, Eltanin 1857, USNM 60135): a, b, anterior and posterior faces of holotype colony, x 3.6; c, branch tip, x 24; d, gastropore lip, x 43; e, gastrostyle, x 132, stereo pair; f, dactylopores surrounding a gastropore, x 52; g, dactylopore, x 160, stereo pair. 103 t- a '??? ^*V**' ?"JaP^*'*^ PLATE 2. Lepidopom dendrostylus (a, S53, USNM 85085; b, holotype, F146; c-e, A910, USNM 60251; f, F146, USNM 85084): a, branch tip bearing compound dactylopore spines, x 23, stereo pair; b, holotype colony, x 0.57; c, gastro- and dactylopores and linear-imbricate coenosteal texture, x 22.5, stereo pair; d, linear- imbricate coenosteal texture, x 180; e, f, gastrostyle, x 96, x 185, respectively (e is a stereo pair). 104 k :M ? "^v^l ?? PLATE 14. Lqjidotheca fascicularis (a, b, Eltanin 1423, USNM 60112): a, male ampulla and efferent pore, x 55, stereo pair; b, female ampullae, x 30. Lepidotheca inconsuta (c, C731, USNM 85098; d, holotype, Eltanin 1422; e, f, Eltanin 1422, USNM 60144): c, branch bearing a female ampulla, x 23, stereo pair; d, holotype colony, x 1.15; e, male ampullae, x 45, stereo pair; f, male ampulla with several apical efferent pores, x 66. 116 PLATE 15. Lepidotheca inconsuta (a, b, Eltanin 1422, USNM 60144; c, C731, USNM 85098): a, two dactylopore spines, x 94; b, Hnear-imbricate coenosteal texture, x 112; c, rudimentary gastrostyle, x 225. Lepidotheca chauliostylus (d, f, holotype, E862; e, h, G3, USNM 85101; g, E856, USNM 85100): d, holotype colony, x 2.1; e, branches illustrating hooded gastropores, aligned dactylopore spines, and male ampullae, x 23, stereo pair; f, aligned dactylopore spines, x 78; g, h, linear-imbricate coenosteal texture, x 195, x 520, respectively. 117 PLATE 16. Lepidotheca chauliostylus (a-c, holorype, E862; d, E856, USNM 85100; e-g, G3, USNM 85101): a-c, aligned dactylopore spines and axial gastropore flanked by two lips, x 60, x 67, x 160, respectively; d, apical view of male ampulla adjacent to a gastropore, x 72, stereo pair; e, hooded gastropore and female ampulla, x 45; f, gasrrostyle, ring palisade, and lateral view of a male ampulla with two efferent pores, x 90, stereo pair; g, female ampullae, x 36. 118 PLATE 17. Lepidotheca cervicornis (a, b, syntype, ZMC; c-g, E291, USNM 85102): a, branch of syntype, x 2.4; b, branch tip illustrating dactylopore spines, x 17; c, gastropores with closely adjacent dactylopore spines, x 54; d, dactylopore spines, x 56; e, branch tip with dactylopore spines and ampullae, x 22, stereo pair; f, g, partially damaged, spongy ampullae, x 95, x 53, respectively (g is a stereo pair). 119 PLATE 18. Lepidotheca cervicornis (a, syntype, ZMC; b, E291, USNM 85102): a, b, gastrostyle, x 165, x 77, respectively (a is a stereo pair). Lepidotheca altispina (c-g, E856): c, holotype colony, NZOI, x 1.6; d-g, branches illustrating tall dactylopore spines and reversed polarity of linear-imbricate coenosteal texture, x 36, x 51, x 65, x 140, respectively (f is a stereo pair), USNM 85103. 120 PLATE 19. Lepidotheca altispina (a-f, E856, USNM 85103): a, b, linear-imbricate coenosteal texture, x 280, x 155, respectively (b is a stereo pair); c, dactylopore spine, x 150; d, gastrostyle, x 125, stereo pair; e, cross section of branch illustrating male ampulla and efferent pore, x 58; f, clustered female ampullae, x 25, stereo pair. 121 PLATE 20. Lepidotheca robusta (a-g, holotype, 196): a, dactylopore spines and several mature female ampullae, x 14, stereo pair; b, holotype colony, x 0.85; c-e, dactylopore spines, x 66, x 78, x 100, respectively (c is a stereo pair); f, g, imbricate coenosteal texture illustrating alternating polarity, x 650, x 290, respectively. 122 PLATE 21. Lepidotheca robusta (a-f, holotype, 196): a, female ampulla and efferent pore, x 40; b, apical view of dactylopore pseudotabulae in a sheared dactylopore spine, x 220, stereo pair; c, d, dactylopore pseudotabulae in longitudinal section of a dactylopore tube, x 205, x 94, respectively (d is a stereo pair); e, f, gastrostyle and tabula, x 65, x 80, respectively (f is a stereo pair). 123 PLATE 22. Stephanohelia praecipua (a-f, E861, 85108): a, colony segment illustrating branching pattern, x 15, stereo pair; b, holotype colony, x 2.0, NZOI; c, d, terminal branch lets illustrating aligned dactylopores, x 61, x 112, respectively (c is a stereo pair); e, gastrostyle, x 290, stereo pair; f, characteristic branching pattern with an axial gastropore, x 48. 124 PLATE 23. Stephanohelia praecipua (a, E861, USNM 85108; b, c, E859, USNM 85107): a, alternating coenosteal polarity, x 420; b, c, male (?) ampullae, x 50, x 95, respectively. Inferiolabiata labiata (d-f, h, F127, NZOI; g, Eltanin 2143, USNM 60007): d, colony, x 1.3; e, branch segment illustrating coenosteal texture and spongy male (?) ampullae, x 17, stereo pair; f, linear-imbricate coenosteal texture with broad coenosteal slit, x 128; g, h, dactylopore spine with lateral dactylostyles, x 55, x 135, respectively. 125 PLATE 24. Inferiolabiata labiata (a, F127, USNM 85109; b, Eltanin 2143, USNM 60007): a, gastrostyle and diffuse ring palisade, x 90, stereo pair; b, clustered ampullae, x 37. Inferiolabiata spinosa (c, e, f, E861, USNM 85112; d, holotype, E861): c, apical view of branch tip illustrating numerous lateral dactylostyles, x 21, stereo pair; d, holotype colony, x 1.4; e, branch coenosteum with one gastropore and several dactylopore spines, x 58, stereo pair; f, dactylopore spines with serrate edges, x 107. 126 PLATE 25. Inferiolabiata spinosa (a-d, E861, USNM 85112; e, 1372, NZOI): a, apical view of dactylopore spines illustrating lateral dactylostyles, x 125; b, gastrostyle and diffuse ring palisade, x 135, stereo pair; c, branch segment with tall dactylopore spines and one male ampulla, x 17; d, male ampulla and efferent pore, x 55, stereo pair; e, female ampulla and efferent pore, x 39. Inferiolabiata towei (f, E305, NZOI; g, P541, NZOI): f, branch segment illustrating dactylopore spines, x 17; g, colony, x 3.0. 127 PLATE 26. Inferiolabiata lowei (a-f, E305, NZOI): a, branch segment illustrating gastrostyle, ridged dactylopore spines, mammiform male ampullae, and gastropores, x 15, stereo pair; b, imbricate coenosteal texture, x 150; c, d, sheared dactylopore spines illustrating adcauline platelet, x 83, x 130, respectively '-:*?-' .^^^t [."llj y;.-vB;'j:''''C;r'-i*j-^:;.)'/i ':,;v';/^,;f PLATE 28. Sporadopora mortenseni (a, P472, NZOI; b, E305, USNM 85113): a, longitudinal section of a gastro- pore tube illustrating presumed male efferent pore, x 65, stereo pair; b, elongate gastrostyle, x 160. Spora- dopora micropora (c, holotype, D39; d, e, D39, USNM 85114): c, holotype colony, x 1.2; d, e, blunt branch tips illustrating gastropores (larger pores) and dactylopores, x 12.8, x 15.4, respectively (e is a stereo pair). 130 PLATE 29. Sporadopora micropora (a g, D39, USNM 85114): a, b, g, coenosteal texture, x 160, x 285, x 61, respectively; c, branch cross section illustrating internal female ampullae and porous branch core, x 2.05; d, e, gastrostyle, x 150, x 67, respectively (e is a stereo pair); f, longitudinal section of gastropore tube flanked by two internal male ampullae, x 44. Sporadopora marginata (h, 2 syntypes from NZGS): x 2.2. 131 PLATE 30. Distkhopora dispar (a, b, f, g, D159, USNM 85116; c, holoiype, D159; d, e, D39, NZOI): a, pore row, x 32.5; b, colony with pseudocyclosystemate arrangement of pore types, x 2.2; c, colony with typical pore- row arrangement of pore types, x 3.0; d, tuberculate coenosteal texture, x 135, stereo pair; e, longitudinal section of branch illustrating two internal male ampullae (branch surface to right), x 30.5; f, gastrostyle with dactyloridge to left, x 54, stereo pair; g, spination of gastrostyle ridge, x 545. 132 PLATE 31. Distichopora dispar (a, D159, USNM 85116; b, D39, NZOI): a, axial view of two dactyloridges, x 150; b, lateral view of a dactyloridge, x 265. Systemapora ornata (c, d, f, P46, USNM 85117; e, holotype, P46, NZOI): c, f, branch segment illustrating aligned dactylopores, lipped gastropores, and several male ampullae, x 30.5, x 38, respectively (f is a stereo pair); d, imbricate coenosteal texture with alternating polarity, x 600; e, holotype colony, x 0.7. 133 PLATE 32. Systemapora ornata (a-f, P46, USNM 85117): a, aligned dactylopores and two lipped gastropores, x 50, stereo pair; c, dactylopore spine, x 320; c, d, gastrostyle, x 240, x 405, respectively