Palaeopneustid genus with 4 genital pores, right anterior occurring with madreporite; weakly developed ambulacral ... [details]
acantha (Greek) = spine, trema (Greek) =hole, referring to the peculiar plates surrounding the anal aperture; [details]
H. B. Fell (1963) described two species [Spatangus thor and Spatangus beryl] from Foveaux Strait, between the south ... [details]
H. L. Clark (1908) described S. pallidus from three small specimens collected from Sagami Bay, Japan. His ... [details]
H. B. Fell (1963) described two species [Spatangus thor and Spatangus beryl] from Foveaux Strait, between the south ... [details]
off Raoul Island, Kermadecs and off Norfolk Island, 256-347 m depth [details]
S. of Goat Id, Victoria, Australia, N. of Eddystone Pt. and Ringarooma Bay, Tasmania [details]
N.E. of Cape Brett, New Zealand, 596-604 m [details]
off Cape Hawke, E. of Brush Island, E. of Sydney, E. of Sugarloaf Point, S.E. of Jervis Bay, New South Wales and E. ... [details]
E. of Brush Island, New South Wales, off Cape Everard, Victoria, E. of Kiama, off Broken Bay, off Sydney, off ... [details]
26 miles S.W. of Cape Everard, Victoria, Australia [details]
E. of Flinders Island, Bass Strait, between Wilson's Promontory and Glennie Island, Victoria and S. of Bemm River, ... [details]
HT: NMNZ 4254; PT: NZOI P689 (3 incomplete specimens) [details]
HT: NMNZ 4235; PT: QVM 1985/15/1, 1975/15/2 [details]
HT: AM J11032; PT: AM J14450, J14452-8, J11082, J10823, J14460, J5819, J14461; NMNZ 6153, 5104, 1995 [details]
HT: AM J10824; PT: AM J6383, J10819-J10820, J10822, J10825, J10871, J11031, J12432, J14466, J14470, J14472-J14474; NMNZ ... [details]
Holotype (fragmented): AM E6304, 26 miles S.W. of Cape Everard, Victoria. Paratype (fragmented): 1, AM E2271, ... [details]
HT: TM: H515; PT: MV F52356, F52357 [details]