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English: Scleritome arrangement in Orthrozanclus elongata n. sp. (a, NIGPAS164892), Halkieria evangelista (b, Sedgwick Museum of Earth Sciences  X24914.2) and Wiwaxia corrugata (c, Royal Ontario Museum 6151). The Orthrozanclus (d) and Halkieria (e) scleritomes are arranged in three concentric zones: a medial zone of oblique transverse rows (vermillion); a dorsolateral ‘inner peripheral’ zone (purple), containing long spines in Orthrozanclus and cultrate sclerites in Halkieria; and a ventrolateral ‘outer peripheral’ zone, containing cultrate (Orthrozanclus) or siculate (Halkieria) sclerites. Dailyatia bacata (f) is reconstructed as having a medial region containing A and B sclerites and a single peripheral zone of C sclerites. The approximately 4:1 ratio of C1:A sclerites and 4:2 ratio of C2:B sclerites35 is taken to indicate that C sclerites occur at twice the frequency of elements in the medial zone. The Wiwaxia scleritome (g) comprises eight transverse rows (shaded) intersected by two rows of intermittently spaced spines.
Date
Source https://www.nature.com/articles/s41598-017-16304-6
Author Fangchen Zhao, Martin R. Smith, Zongjun Yin, Han Zeng, Guoxiang Li & Maoyan Zhu
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Scleritome arrangement in Orthrozanclus elongata, Halkieria evangelista and Wiwaxia corrugata

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24 November 2017

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current21:48, 6 August 2023Thumbnail for version as of 21:48, 6 August 20231,650 × 1,461 (660 KB)HemiaucheniaHigher res
16:29, 6 May 2019Thumbnail for version as of 16:29, 6 May 2019900 × 796 (164 KB)Sir ShurfUser created page with UploadWizard
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