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Fig. 3 | BMC Evolutionary Biology

Fig. 3

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

Fig. 3

Frontal pore and the ventral glandular network of Xenoturbella. a–b: X. japonica sp. nov., holotype female specimen. a–a”: Reconstructed images showing the relative positions of the frontal pore, statocyst (blue), ventral glandular network (green) and the basal lamina (red). b: Longitudinal section with anterior to the left. c–d: X. japonica sp. nov., paratype juvenile specimen. c: Volume rendering image of the anteroventral tip. d: Longitudinal section with anterior to the left. e–h: X. bocki. e: Longitudinal section with anterior to the left. f: Latitudinal section with anterior to the top. g: Transverse section of the anterior part of an animal, with dorsal to the top. The frontal organ is present in the mid-ventral region (black square). h: Anterior part of a specimen pressed under a cover glass. White arrowheads, ventral glandular network; white arrows, frontal pore; black arrowhead, side furrow; black arrows, statocyst. Scale bars: a–a”: 600 μm, b,d: 1 mm, e,f: 500 μm

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