Figure 1
Study area with location of collecting points at Seixas Beach, João Pessoa, Paraíba, Brazil.
Figure 2
Amphipholis squamata. a, dorsal view of the animal; b, ventral view of the animal; c, dorsal view of the disk; d, ventral view of the disk; e, detail of the jaws; f, dorsal view of the arm; g, ventral view of the arm. ADS, adoral shield; AS, arm spine; BS, bursal slit; CD, central dorsal scale; DAP, dorsal arm plate; IP, infradental papillae; LAP, lateral arm plate; OP, oral papillae; OS, oral shield; RS, radial shield; TS, tentacle scale; VAP, ventral arm plate. Scales: a-d, f, 1 mm; e, 0.5 mm. The arms are oriented from the distal to proximal region.
Figure 3
Amphipholis januarii. a, dorsal view of the animal; b, ventral view of the animal; c, dorsal view of the disk; d, ventral view of the disk; e, detail of the jaws; f, dorsal view of the arm; g, ventral view of the arm; h, lateral view of the arm. ADS, adoral shield; AS, arm spine; BS, bursal slit; CD, central dorsal scale; D, distal region; DAP, dorsal arm plate; IP, infradental papillae; MP, madreporite; OP, oral papillae; OS, oral shield; P, proximal region; RS, radial shield; TS, tentacle scale; VAP, ventral arm plate. Scales: a-b, 10 mm; c-d, f-h, 2 mm; e, 1 mm.
Figure 4
Microphiopholis gracilimna. a, dorsal view of the animal; b, ventral view of the animal; c, dorsal view of the disk; d, ventral view of the disk; e, detail of the jaws; f, dorsal view of the arm; g, ventral view of the arm; h, lateral view of the arm. ADS, adoral shield; AS, arm spine; BS, bursal slit; CD, central dorsal scale; D, dorsal region; DAP, dorsal arm plate; IP, infradental papillae; LAP, lateral arm plate; MP, madreporite; OP, oral papillae; OS, oral shield; P, proximal region; RS, radial shield; TS, tentacle scale; VAP, ventral arm plate. Scales: a-b, 5 mm; c, 1 mm; d-h, 2 mm.
Figure 5
Ophiactis savignyi. a, dorsal view of the animal; b, ventral view of the animal; c, dorsal view of the disk; d, ventral view of the disk; e, detail of the jaws; f, dorsal view of the arm; g, ventral view of the arm. ADS, adoral shield; AP, apical papillae; AS, arm spine; BS, bursal slit; CD, central dorsal scale; D, dorsal region; DAP, dorsal arm plate; DS, dorsal scales; LAP, lateral arm plate; OP, oral papillae; OS, oral shield; P, proximal region; RS, radial shield; SP, spines of the disk; TS, tentacle scale; VAP, ventral arm plate. Scales: a-b, 5 mm; c-g, 1 mm.
Figure 6
Ophiocomella ophiactoides. a, dorsal view of the animal; b, ventral view of the animal; c, dorsal view of the disk; d, ventral view of the disk; e, detail of the jaws; f, dorsal view of the arm, oriented from the distal to proximal region; g, ventral view of the arm, oriented from the proximal to the distal region. ADS, adoral shield; AP, apical papillae; AS, arm spine; BS, bursal slit; D, distal region; DAP, dorsal arm plate; LAP, lateral arm plate; MP, madreporite; OP, oral papillae; OS, oral shield; P, proximal region; RS, radial shield; SP, spines of the disk; TS, tentacle scale; VAP, ventral arm plate. Scales: a-b, d-f, 1 mm; c, g, 2 mm.
Figure 7
Ophioderma apressa. a, dorsal view of the disk; b, dorsal view of the arm; c, ventral view of the disk; d, ventral view of the arm; e, detail of the jaws; f, lateral view of the arm. ADS, adoral shield; AS, arm spine; BS, bursal slit; D, dorsal region; DAP, dorsal arm plate; LAP, lateral arm plate; OP, oral papillae; OS, oral shield; P, proximal region; TS, tentacle scale; VAP, ventral arm plate. Scales: a, 10 mm; b, d, f, 2 mm; c, 5 mm; e, 1 mm.
Figure 8
Echinometra lucunter. a, dorsal view of the animal; b, ventral view of the animal; Euthyonidiella occidentalis. c, dorsal view of the animal; d, rosette from tentacle; e, table from tentacles; f, rods from tentacle; g, tables from body wall; h, endplate from tube feet; i, rod from tube feet. Scales: a-b, 5 mm; c, 2 mm; d, f, 10 µm; e, g, i, 20 µm; h, 50 µm.
Figure 9
Stolus cognatus. a, dorsal view of the animal; b, rosettes from tentacle; c, rods from tentacles; d, plates from body wall; e, supporting rod from tube feet; f, supporting plate from tube feet. Thyone pawsoni. g, dorsal view of the animal; h, tables from body wall; I, tables from tube feet. TE, tentacles; TF, tube feet. Scales: a, 2mm; b-c, 10 µm; d-e, 50 µm; f, h-i, 20 µm; g, 1 mm.
Figure 10
Lissothuria braziliensis. a, dorsal view of the animal; b, lateral view of the animal, c, ventral view of the animal; d-e tables hourglass-shaped; f, endplate; g, scales from body wall; h, j, curved supporting rods from tube feet; i, with plane plates from tube feet. SC, large scales from dorsal side; TE, tentacles; TF, tube feet. Scales: a-c, 6 mm; d-e, h-j, 20 µm; f, 40 µm; g, 100 µm.
Figure 11
Chiridota rotifera. a, dorsal view of the animal; b, wheel ossicles from body wall; c, rods from body wall. TE, tentacles; WT, warts or papillae formed by agglomeration of ossicles. Scales: 2 mm; b, 50 µm; c, 20 µm.