Fig. 1
From: A new species of Xenoturbella from the western Pacific Ocean and the evolution of Xenoturbella
Morphology of the holotype specimen (female) of Xenoturbella japonica sp. nov. a Live specimen with anterior to the left. b Antero-ventral part of a relaxed specimen, composed from two separate photographs. c Mid-ventral part of a relaxed specimen. The ventral glandular network ends at the ring furrow. d Volume rendering image from microCT scans showing the difference in epidermal composition between the anterior and posterior parts of the animal. e MicroCT scan showing a 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). f Volume rendering image from microCT scans showing oocytes inside the intestine (int). White arrowheads, ring furrow; white arrows, side furrow; black arrowheads; mouth, white double arrowheads, oocytes. Scale bars: a: 2Â cm, d: 3Â mm, e: 1Â mm