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56 results for “Tellinoidea”
PLATE 2 — Macoma biota n in New species of Macoma (Bivalvia: Tellinoidea: Tellinidae) from southeastern Brazil, and with description of its gross anatomy
PLATE 2 — Macoma biota n. sp.: Fig. 6 Internal view of the right shell valve (paratype MHN BBI 554); Fig. 7 — Paratype MHNBBI 555: Organs of the pallial cavity viewed from the left side after removal of the left shell valve and most of its mantle lobe; the remaining left mantle lobe was bent to expose the left siphonal organ; Fig. 8 — Detail of the cruciform muscle and accessory adductor muscle as seen in ventral view, the posterior end of the animal upturned. aa = accessory adductor muscle; aas = accessory adductor scar; aam = anterior adductor muscle; aams = anterior adductor muscle scar; acms = anterior cruciform muscle scar; arms = anterior retractor pedal muscle scar; cm = cruciform muscle; ex = exhalant siphon; f = foot; id = inner demibranch; ilp = inner labial palp; in = inhalant siphon; lm = left mantle lobe; lso = left siphonal organ; od = outer demibranch; olp = outer labial palp; pam = posterior adductor muscle; pams = posterior adductor muscle scar; pcms = posterior cruciform muscle scar; prm = posterior pedal retractor muscle; prms = posterior pedal retractor muscle scar; ps = pallial sinus r = rectum; rm = right mantle lobe; rso = right siphonal organ; vc = ventral channel.
PLATE 1 — Figs. 1–4 in New species of Macoma (Bivalvia: Tellinoidea: Tellinidae) from southeastern Brazil, and with description of its gross anatomy
PLATE 1 — Figs. 1–4 Holotype of Macoma biota MZUSP 41183: 1 and 2 — External view of the left and right shell valves, respectively; 3 — Cardinal teeth of the right valve; 4 — Cardinal teeth of the left valve. 5 — Dorsal view of the paratype MZUSP 41186.
Figure 14 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 14. Paphies elongata. An interior view of the fused ventral mantle margin posterior to the pedal gape and showing the rejectory tract. This figure also illustrates the posterior adductor muscle and the visceral ganglia beneath it. AN, anus; AVG, accessory visceral ganglia; FIMF(2), fused inner mantle folds (outer component); IMF(1), inner mantle fold (inner component); IS, inhalant siphon; PA (1), posterior adductor muscle (anterior component); PA(2), posterior adductor muscle (posterior component); PGA, pedal gape; R, rectum; RT, rejectory tract; SN, siphonal nerve; SRM, siphonal retractor muscles; VG, visceral ganglia; VG-AVG-CONN, visceral ganglia-accessory visceral ganglia connective.
Figure 7. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 7. Paphies elongata. A transverse section through the right ventral mantle margin of the pedal gape. IMF(1), inner mantle fold (inner component); IMF(2), inner mantle fold (outer component); MMF, middle mantle fold; OMF, outer mantle fold; P, periostracum; PN, pallial nerve; PRM, pallial retractor muscle; RT, rejectory tract.
Figure 17 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 17. Paphies elongata. The organs of the pericardium as seen from the right side. AN, anus; AU, auricle; CA, ctenidial axis; DD, digestive diverticulae; G, gonad; GA, gonadial aperture; K, kidney; PA, posterior adductor muscle; PALID, point of attachment of the ascending lamella of the inner demibranch to the visceral mass; PALOD, point of attachment of the ascending lamella of the outer demibranch to the mantle; PG, pericardial gland; PPR, posterior pedal retractor muscle; PR, prodissoconch; R, rectum; RA, renal aperture; R-PA, reno-pericardial aperture; V, ventricle; VM, visceral mass.
Figure 10. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 10. Paphies elongata. A more detailed view of the ciliary currents of the ctenidium and the ctenidial-labial palp junction, as seen from the right side. AA(1), anterior adductor muscle(1); APR, anterior pedal retractor muscle; CA, ctenidial axis; ID, inner demibranch; ILP, inner labial palp; M, mouth; OD, outer demibranch; OLP, outer labial palp; PA, posterior adductor muscle; PALOD, point of attachment of the ascending lamella of the outer demibranch to the mantle; PPR, posterior pedal retractor muscle; SAE, supra-axial extension of the outer demibranch; VM, visceral mass; VMFG, ventral margin food groove of the inner demibranch.
Figure 6 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 6. Paphies elongata. (a) The siphons as seen from the posterior aspect. More detailed views from the lateral aspect of (b), the inhalant and (c) the exhalant siphons. (d) One of the eight largest inhalant siphonal tentacles shown in greater detail. ES, exhalant siphon; MMF, middle mantle fold; IS, inhalant siphon.
Figure 2 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 2. Paphies elongata. (a) Lateral and (b) posterior views of the left shell valve. Also illustrated in (c) and (d) are the same views of Donax columbella drawn to approximately the same scale. a–b, the dorsoventral axis of the shell; x–y, the greatest shell width; small arrow indicates the position of the umbones; the angles suggest that the posterior face of the shell of P. elongata is slightly more elongate than in D. columbella. L, ligament of D. columbella.
Figure 16 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 16. Paphies elongata. (a) A transverse section through the pedal ganglia showing the position of two putative statocysts. (b) A single putative statocyst illustrated in greater detail. C-P-CONN, cerebro-pleural-visceral ganglia-connective; PEG, pedal ganglia; PEN, pedal nerve; STA, statolith; STC, statocyst.
Figure 12 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 12. Paphies elongata. The ciliary currents of the visceral mass as seen from the left side. AA (1), anterior adductor muscle(1); AA(2), anterior adductor muscle(2); APR, anterior pedal retractor muscle; DEF, dorsal extension of the foot; F, foot; HF, heel of the foot; PA, posterior adductor muscle; PPR, posterior pedal retractor muscle; PR, prodissoconch; PS, pallial sinus; VM, visceral mass.
Figure 8. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 8. Paphies elongata. A transverse section through the fused ventral mantle margin posterior to the pedal gape. FIMF(2), fused inner mantle folds (outer component); FRT, fused rejectory tracts; IMF(1), inner mantle fold (inner component); MMF, middle mantle fold; OMF, outer mantle fold; P, periostracum; PRM, pallial retractor muscle; SC, secretory cells; TC, transverse connective.
Fig. 18 in Cladistic analysis of the transisthmian genus Eurytellina (Bivalvia: Tellinoidea) based on morphological and morphometric data
Fig. 18 Detail of proximal aperture and muscular attachments of siphons (total excision of left siphonal muscle in "a" and "b"), siphonal membrane (sme) between both internal apertures, siphonal organ (so) and siphonal muscle branches (rs1 and rs2): a) Eurytellina lineata; b) Macoma constricta; c) E. angrensis (detail of siphonal organ on left branch of siphonal muscle). Scale: 1 mm
Fig. 10 in Cladistic analysis of the transisthmian genus Eurytellina (Bivalvia: Tellinoidea) based on morphological and morphometric data
Fig. 10 Ventral view of cardinal teeth and umbonal cavity: a) Macoma constricta; b) Temnoconcha brasiliana; c) Dallocardia muricata; d) Semele proficua; e) Eurytellina punicea; f) Tellinota madagascariensis. Scale: 1 mm
Fig. 16 in Cladistic analysis of the transisthmian genus Eurytellina (Bivalvia: Tellinoidea) based on morphological and morphometric data
Fig. 16 Detail of palps and demibranchs: a) Anomalocardia brasiliana; b) Donax hanleyanus; c) Macoma constricta; d) Eurytellina punicea. Scale: 4 mm
Fig. 5 in Cladistic analysis of the transisthmian genus Eurytellina (Bivalvia: Tellinoidea) based on morphological and morphometric data
Fig. 5 Internal view of right valve in selected species showing pallial sinus and dorso- ventral axis (white dashed line): a) Sanguinolaria sanguinolenta; b) Iphigenia brasiliana; c) Donax hanleyanus. Scale: 5 mm
Fig. 17 in Cladistic analysis of the transisthmian genus Eurytellina (Bivalvia: Tellinoidea) based on morphological and morphometric data
Fig. 17 Detail of inner surface of inner hemipalp (a) and ventral view of interior mantle (b), showing mantle gland of Tagelus plebeius. White arrowheads indicating hemipalp papillae. Scale: 5 mm
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