Characteristics
autozooid form Bicellariella-like Bugula-like Bicellariella-like but with elongated opesia Avicularia absent common, on almost all autozooids rare, not on all autozooids rare and large proximal on the lower autozooids of a fan, progressively more distal on succeeding autozooids common and large only on the inner side of an autozooid at a bifurcation bifurcation type 4 5 Colony adherent with disc rootlets, rhizoids fans biserial and normal to the frontal plane biserial and zooids turning toward the middle of the branch biserial and turned out partly uniserial fan starts with a short kenozooid followed by a pseudo-ancestrula one single zooid between pseudo-ancestrula and biserial fan pseudo-ancestrula a zooid or a kenozooid kenozooid autozooid(has a polypide or brown body) intermediate (operculum, but no polypide) pseudo-ancestrular form Bugula-like, opesia large turbinate with slit-like prolongation turbinate with terminal oval opesia twin-arranged like a short stem-kenozooid Spines on autozooids absent inner corner rounded or maximal 1 spine, outer corner maximal 1 spine inner corner rounded or maximal 1 spine, outer corner maximal 2 spines inner corner rounded or maximal 1 spine, outer corner maximal 3 spines mostly 1 spine in the middle of the distal margin 4 or more long spines around opesia presence of possibilities B or C and F in the same fan Spines on pseudo-ancestrula absent 5 (3 on one side, 2 on the opposite side) 6 (3 on both sides) 6 or more around a small opesia 8 ore more bordering opesia with slit-like prolongation both corners with maximal 1 or 2 spines 4 (3 on one side, 1 on the oposite side) Stem composed of a single row of elongated Cilindrical uncalcified kenozooids Kenozooids with lateral thickenings Zooids, distally widening and shortening Stem-(keno)zooids distally …. than proximally shorter and narrower not shorter shorter and broader alternate long and short (short = 1/3 of long) Stem-kenozooids and/or pseudo-ancestrula annulated Yes No Vesicles not reported 1 or 2 on each zooid near the first and second bifurcation and on the stem zooids only on rhizoids on stem-kenozooids | Remaining taxa: Caulibugula annulata (Maplestone, 1879)
Caulibugula arcasounensis De Blauwe, 2005
Caulibugula armata Verrill, 1900
Caulibugula aspinosa Mawatari, 1956
Caulibugula binata Liu, 1985
Caulibugula bocki Silén, 1941
Caulibugula caliculata (Levinsen, 1909)
Caulibugula californica Robertson, 1905
Caulibugula ciliata (Robertson, 1905)
Caulibugula ciliatoidea Liu, 1990
Caulibugula dendrograpta (Waters, 1913)
Caulibugula exilis (MacGillivray, 1890)
Caulibugula glabra (Hincks, 1883)
Caulibugula gracilenta Liu, 1985
Caulibugula haddoni (Kirkpatrick, 1890)
Caulibugula hainanica Liu, 1984
Caulibugula hastingsae
Caulibugula inermis Harmer, 1926
Caulibugula irregularis Liu, 1985
Caulibugula levinseni Osburn, 1940
Caulibugula longiconica Liu, 1985
Caulibugula longirostrata Liu, 1985
Caulibugula lunga Tilbrook, 2006
Caulibugula mortenseni (Marcus, 1925)
Caulibugula occidentalis (Robertson, 1905)
Caulibugula pearsei Maturo, 1966
Caulibugula separata Harmer, 1926
Caulibugula sinica Liu, 1985
Caulibugula tuberosa Hastings, 1939
Caulibugula zanzibarensis Waters, 1913
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