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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: A new species of Xenoturbella from the western Pacific Ocean and the evolution of Xenoturbella

Fig. 2

Morphology of the paratype specimen (juvenile) of Xenoturbella japonica sp. nov. a Live specimen with anterior to the top. b Left-ventral view of a contracted specimen after fixation with anterior to the left. c–e MicroCT scans showing internal morphology. c Latitudinal section with anterior to the top. d Transverse section just anterior to the mouth. The epidermis (ep), intraepidermal nerve net (nn), basal lamina (bl) and muscle layer (ml) surround the intestine (int). e Longitudinal section with anterior to the left. The posterior epidermis, to the right, is curled due to contraction following fixation. White arrowheads, ring furrow; white arrows, side furrow; black arrow, statocyst; black arrowhead, mouth. Scale bars: a: 5 mm, d,e: 1 mm

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