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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 1.A Sternaspis sp. ventral view with some morphological features B Ventro-caudal shields of some Sternaspis species C Shield parts as herein proposed to distinguish different species (AD: anterior depression, FPP: fan posterior projection) (A modif. after Uschakov 1955, reproduced with permission; B–C modified after von Marenzeller 1890).
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 8.Sternaspis costata von Marenzeller, 1879, emended, neotype (CMNH ZW-120) A Complete, ventral view B Ventro-caudal shield C–F Sakhalin Island specimens (ZIRAS 43188), ventro-caudal shields. Bars: A 2 mm B 0.5 mm C 0.9 mm D 1.4 mm E 1.5 mm (Photos D–E: Eijiroh Nishi).
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 1.A Sternaspis sp. ventral view with some morphological features B Ventro-caudal shields of some Sternaspis species C Shield parts as herein proposed to distinguish different species (AD: anterior depression, FPP: fan posterior projection) (A modif. after Uschakov 1955, reproduced with permission; B–C modified after von Marenzeller 1890).
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 9.Sternaspis fossor Stimpson, 1853 A Juvenile (HMCS 9953670), anterior end exposed, ventral view B Another specimen (HMCS 9953671), ventro-caudal shield, frontal view C Neotype (USNM 15543), anterior end exposed, ventral view D Same, ventro-caudal shield, frontal view E–F Ventro-caudal shields of three other specimens (USNM 7872). Bars: A, F 1 mm B 0.6 mm C, E 0.8 mm D 0.7 mm G 1.2 mm.
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 10.Sternaspis islandica Malmgren, 1867, syntypes (SMNH 5135) A Complete syntype, ventral view B Same, anterior end, frontal view C Same, ventro-caudal shield D Same, posterior region, dorsal view E Non-type specimen (ZMUC), with darker, blackish shield F–H Ventro-caudal shield of other non-type specimens (MNHN). Bars: A 1.2 mm B 1.4 mm C, D 1.3 mm F 0.7 mm G–H 1 mm.
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2005 California Academy of Sciences
CalPhotos
These worms live in clusters of calcified tubes. Each worm has up to 11 pairs of branchial filaments. Photographed at 20 m depth.
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