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File:Polarasterias janusensis (10.5852-ejt.2018.411) Figure 2.png

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English: Fig. 2. Polarasterias janusensis Rousseau & Gale gen. et sp. nov. A–C. Holotype PMO 218.011a. A. Nearly complete specimen preserved in a cut-through fashion. B. Drawing detail from ambulacral groove showing ambulacrals, adambulacrals, adambulacral spines and scattered valves of forcipulate pedicellariae. C. Portion of arm illustrated in B, basal pieces of straight pedicellariae visible in cross section. D. Paratype PMO 217.982, oral region in actinal view. E. Paratype PMO 217.936, Arm tip showing terminal ossicle. F–G. Paratype PMO 218.069. F. Obliquely compressed radius showing adambulacrals, marginals, and columns of abactinal ossicles. G. Drawing detail from F. Abbreviations: abact = abactinal ossicle; adamb sp = adambulacral spine; adamb = adambulacral; amb = ambulacral; im = inferomarginal; ped bp = basal piece of pedicellariae; sm = superomarginal; sp = spine.
Date
Source Rousseau, J., Gale, A. S., & Thuy, B. (2018). New articulated asteroids (Echinodermata, Asteroidea) and ophiuroids (Echinodermata, Ophiuroidea) from the Late Jurassic (Volgian / Tithonian) of central Spitsbergen. European Journal of Taxonomy, (411). https://doi.org/10.5852/ejt.2018.411
Author Rousseau, Gale & Thuy (2018)
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9 March 2018

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current19:12, 4 August 2023Thumbnail for version as of 19:12, 4 August 20231,869 × 2,243 (7.42 MB)Christian Ferrer{{Information | description = {{en|1=Fig. 2. ''Polarasterias janusensis'' Rousseau & Gale gen. et sp. nov. A–C. Holotype PMO 218.011a. A. Nearly complete specimen preserved in a cut-through fashion. B. Drawing detail from ambulacral groove showing ambulacrals, adambulacrals, adambulacral spines and scattered valves of forcipulate pedicellariae. C. Portion of arm illustrated in B, basal pieces of straight pedicellariae visible in cross section. D. Paratype PMO 217.982, oral region in actinal...

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