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Sergio I. Salazar-Vallejo, Galina Buzhinskaja
Zookeys
Figure 9.Sternaspis williamsae sp. n., holotype (LACM 5353) A Frontal view B Anterior end, oblique frontal view C Ventro-caudal shield D Largest paratype (LACM 5354), ventral view E–H Ventro-caudal shields, frontal view. Bars: A, G 0.9 mm B, H 1 mm C 0.5 mm D 1.2 mm E 0.4 mm F 0.6 mm.
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 20.Petersenaspis sp (ZMA 1717) A Complete specimen, ventral view B Same, anterior segments in lateral view C Same, ventro-caudal shield, frontal view, lateral plates forced dorsally D Same, posterior region, dorsal view E Incomplete specimen, lateral view F Same, enlargement of right lateral shield plate. Bars: A 1.2 mm B 0.44 mm C 0.38 mm D 1 mm E 0.9 mm F 0.42 mm.
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Sergio I. Salazar-Vallejo, Galina Buzhinskaja
Zookeys
Figure 10.Sternaspis williamsae sp. n. Juveniles (LACM 5357) A Complete specimens, ventral view B Smallest juvenile, ventral view C Second specimen, ventral view D Intermediate-sized juvenile, ventral view E Second largest specimen, ventral view F Same, ventro-caudal shield, oblique illumination G Largest specimen, ventral view H Same, ventro-caudal shield, incident illumination. Bars: A 1.4 mm B 0.1 mm C 0.2 mm D, G 0.6 mm E 0.5 mm F, H 0.3 mm.
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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 4.Sternaspis thalassemoides Otto, 1821 A Neotype (ZMUC POL 2159), dorsal view B Same, ventral view C Paraneotype, ventral view D Another paraneotype, anterior chaetigers, ventral view E Same, chaetae of chaetiger 3 F Neotype, ventro-caudal shield. Bars: A 2.4 mm B, C 2.6 mm F 1.7 mm.
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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 2.Variation of the ventro-caudal shield in Sternaspis affinis Stimpson, 1864, station 996 A Four specimens showing size differences B Specimen 1, ventro-caudal shield C Specimen 3, ventro-caudal shield D Specimen 4, ventro-caudal shield E Specimen 2, ventro-caudal shield F Same, ventro-caudal shield showing integument papillae. Bars: A 2 mm, B–F 1 mm.
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 5.Sternaspis affinis Stimpson, 1864, neotype (RBCM 005-138-001) A Dorsal view B Ventral view C Anterior end, frontal view (insert: juvenile, prostomium with eyes) D Ventro-caudal shield, frontal view E Posterior region, lateral view. Bars: A 1 mm B 1.1 mm C 0.8 mm D 0.6 mm E 0.7 mm.
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 6.Sternaspis africana Augener, 1918 n. status, neotype (NHM 1930.10.8.2582-90) A Anterior end, ventral view B Posterior end, oblique lateral view C Posterior region, dorsal view D–F Ventro-caudal shields of three other specimens (IRFA-STE 001). Bars: A 2.2 mm B 1.7 mm C 2.1 mm D–E 0.7 mm F 0.9 mm.
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Kelly Sendall, Sergio I. Salazar-Vallejo
Zookeys
Figure 7.Sternaspis andamanensis sp. n., holotype (ZMUC POL-2157) A Dorsal view B Ventral view, anterior region bent ventrally C Same, close-up of chaetigers 2–3 D Ventro-caudal shield E Lateral view. Bars: A 1.2 mm B 1 mm C 0.6 mm D 0.4 mm E 1.1 mm (Photos: Jørgen Olesen).
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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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