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and position of the hypostome relative to the cephalic appendages. (E) Dorsal view of YKLP 11430. (F) Distal portion of the first left post-antennal appendage. (G) Close-up of left antenna in (E). (H) Close-up of the fourth left thoracic appendage (LTh4) with endopodite and exopodite. (I) Close-up of two podomeres of the fifth right thoracic appendage (RTh5). Note the prominent enditic spines. Abbreviations: ant—antenna (e); ann—nth annulus of the antenna; Cn—nth post-antennal cephalic appendage; exo—exopodite; hs—head shield; ls—lateral spines on the posterior margin of the pygidium; pdn—nth podomere of the aapendages; pg—pygidium; s—spine (s)/seta (e); Tn—nth thoracic tergite; Thn—nth thoracic appendages; tc—terminal claw; R—right; L—left. Scale bars: 1 cm in (A), 5 mm in (C,E), 2 mm in (D), 1 mm in (B,H), 0.5 mm in (G,I), and 0.2 mm in (F).
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From paper: Macro-photographic (A,C,E), fluorescent (B,F–I), and tomographic (D) images of
Retifacies abnormalis. (A) Dorsal view of YKLP 13927. (B) Close-up of the proximal eight annuli of right antenna in (A). (C) Dorsal view of YKLP 11436. (D) Head region shown in (C) demonstrates the morphology
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Ventral
Morphology of the Non-Trilobite Artiopod Retifacies abnormalis Hou, Chen & Lu, 1989, from the Early Cambrian Chengjiang Biota, China Biology 2022, 11(8), 1235;
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Maoyin Zhang,Yu Liu, Xianguang Hou, Javier Ortega-Hernández, Huijuan Mai, Michel
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