Global Diversity of the Stylasteridae (Cnidaria: Hydrozoa: Athecatae)
Figure 8
Aspects of Coenosteal Texture, Pseudosepta, and Ampullae.
(A) Stylaster verrillii, USNM 1123299, reticulate granular coenosteal texture, (B) Errina sinuosa, USNM 85131, radial-imbricate coenosteal texture, (C) Crypthelia trophostega, USNM 1122887, nematopores on thin pseudosepta, (D–E) Errina altispina, USNM 71778, linear-imbricate coenosteal texture (normal polarity), (F) Systemapora ornata, USNM 85117, contiguous alternating polarity of imbricating platelets, (G) Adelopora pseudothyron, USNM 60128, superficial female ampulla with a large lateral efferent tube, (H) Distichopora anomala, USNM 71813, stellate-ridged superficial female ampullae, (I) Crypthelia lacunosa, USNM 45684, large female ampulla in cyclosystem lid, itself covered with reticulate ridges and nematopores, (J) Sporadopora dichotoma, USNM 60100, internal female ampulla with a small efferent duct to surface, (K) Stenohelia robusta, USNM 21283, cluster of superficial male ampullae with small apical efferent pores, (L) Conopora pauciseptata, USNM 52619, internal male ampullae flanking a double-chambered gastropore tube.