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24 results for “Clavagellidae”
Figure 24. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 24. Stirpulina ramosa. A transverse section through one of the kidneys showing a posterior pedal retractor muscle and its connection with a cerebro-pleural – visceral ganglia connective. C-P-V-CONN, cerebropleural – visceral ganglia connective; DK, distal limb of the kidney; PPR, posterior pedal retractor muscle.
Figure 25. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 25. Stirpulina ramosa. A section through the hypobranchial gland lining the supra-branchial chamber. ECC, epithelial ciliated cell; EGC, epithelial gland cell; GC, gland cells.
Figure 22 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 22. Stirpulina ramosa. The organs of the pericardium, as seen from the right side. AU/PG, auricle and pericardial gland; CA, ctenidial axis; GA, gonadial aperture; ID, inner demibranch; IID, inner surface of the inner demibranch; K, kidney; OV, ovary; P, pericardium; PA, posterior adductor muscle; PALID, point of attachment of the ascending lamella of the inner demibranch to the visceral mass; PPR, posterior pedal retractor muscle; R, rectum; REA, renal aperture; RPA, reno-pericardial aperture; T, testis; V, ventricle; VD, vas deferens.
Figure 8 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 8. Stirpulina ramosa. The internal structure of the anterior tube in the region around the left shell valve embedded within it. AA, anterior adductor muscle scar; APR, anterior pedal retractor muscle scar; AVG, anterior (left) valve growth; CL, clasts; IL, internal lip of the adventitious tube; JS, juvenile shell; PA, posterior adductor muscle scar; PE, periostracum; PEM, pallial elevator muscle scar; PL, pallial line; PLE, sutured pleat in tube; PPR, posterior pedal retractor muscle scar; PS, pallial sinus; PVG, posterior (left) valve growth.
Figure 19. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 19. Stirpulina ramosa. A, the anus as seen from the dorsal aspect. B, the anal opening as seen from the posterior aspect. C, the paired visceral ganglia beneath the anterior end of the anal sheath, as seen from the ventral aspect. AN, anus; ANN, anal nerve; AP, anal papilla; CAN, ctenidial axis nerve; CP-VG, cerebro-pleural – visceral ganglia connective; SN, siphonal nerve; VG, visceral ganglia.
Figure 14 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 14. Stirpulina ramosa. The organs of the mantle cavity as seen from the right side. ES, exhalant siphon; F, foot; IBC, infra-branchial chamber; ID, inner demibranch; IS, inhalant siphon; LAP, labial palp; OD, outer demibranch; PE, periostracum; SBC, suprabranchial chamber; VM, visceral mass.
Figure 15. Stirpulina ramosa. Transverse sections through A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 15. Stirpulina ramosa. Transverse sections through A, the ctenidial axis and B, the junction between the ascending lamella of the outer demibranch with the mantle. ALOD, ascending lamella of the outer demibranch; BBV, branchial blood vessel; BC, blood cells; BN, branchial nerve; CAFG, ctenidial axis food groove; CJ, cuticular junction; ME, mantle epithelium; N, nerve.
Figure 13. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 13. Stirpulina ramosa. A transverse section through the pedal gape. IMF, inner mantle fold; LML, left mantle lobe; MMF, middle mantle fold; OMF, outer mantle fold; PE, periostracum; PEG, periostracal groove; PG, pedal gape; PL, pallial line; RML, right mantle lobe; RT, rejection tract.
Figure 18 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 18. Stirpulina ramosa. The course of the intestine in the visceral mass, heart and kidney. AA, anterior adductor muscle; AN, anus; APR, anterior pedal retractor muscle; CA, ctenidial axis; CSS/MG, conjoined style sac and mid gut; DD, digestive diverticulae; F, foot; H, heart; HG, hind gut; ID, inner demibranch; K, kidney; M, mouth; MG, mid gut; O, oesophagus; OV, ovary; PA, posterior adductor muscle; PALID, point of attachment of the ascending lamella of the inner demibranch to the visceral mass; PPR, posterior pedal retractor muscle; R, rectum; ST, stomach; T, testis; VD, vas deferens; VM, visceral mass.
Figure 16 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 16. Stirpulina ramosa. The ctenidial–labial palp junction of the right side. AA, anterior adductor muscle; APR, anterior pedal retractor muscle; DD, digestive diverticulae; DOG, distal oral groove; ID, inner demibranch; ILM, inner lip of mouth; ILP, inner labial palp; M, mouth; OD, outer demibranch; OLM, outer lip of the mouth; OLP, outer labial palp; OV, ovary; POG, proximal oral groove; T, testis; VM, visceral mass.
Figure 17 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 17. Stirpulina ramosa. The general structure of the visceral mass and pericardium, as seen from the right side. AA, anterior adductor muscle; AN, anus; APR, anterior pedal retractor muscle; CA, ctenidial axis; DD, digestive diverticulae; F, foot; H, heart; ID, inner demibranch; K, kidney; M, mouth; OV, ovary; PA, posterior adductor muscle; PALID, point of attachment of the ascending lamella of the inner demibranch to the visceral mass; PPR, posterior pedal retractor muscle; R, rectum; T, testis; VD, vas deferens; VM, visceral mass.
Figure 6. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 6. Stirpulina ramosa. A, the external surface of the internal, right, shell valve as seen from the side. B, the internal, right, shell valve as seen from the anterior aspect. AVG, anterior (right) valve growth; JS, juvenile shell; PVG, posterior (right) valve growth.
Figure 9. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 9. Stirpulina ramosa. A, the lip located within the adventitious tube as seen from the posterior aspect. B, a detailed internal view of the hinge region of the left shell valve. CL, clasts; DOC, dorsal cavity; DS, dorsal septum; IL, internal lip; LP, ligament pit; RE, resilifer.
Figure 26. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 26. Stirpulina ramosa. A, transverse section through the heart and rectum. B, detail of the podocytes that make up the pericardial gland within the auricles. AU/PG, auricle and pericardial gland; BBV, branchial blood vessel; CA, ctenidial axis; P, pericardium; R, rectum; V, ventricle.
Figure 28. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 28. A postulated pattern of evolution for the Clavagellidae. Illustrations redrawn after Morton (1984b, Clavagella), Morton (2003, Dianadema), Morton (2005, Bryopa), this study (Stirpulina) and Pojeta & Sohl (1987, Ascaulocardium).
Figure 4 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 4. Stirpulina ramosa. The watering pot component of the adventitious tube as seen from the anterior aspect.
Figure 5 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 5. Stirpulina ramosa. An internal view of the watering pot component of the adventitious tube. PLE, sutured pleat in tube; SE, septum.
Figure 3 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 3. Stirpulina ramosa. The sutured pleat identifiable around the left dorsal region of the adventitious tube. CL, clasts; PLE, sutured pleat in tube; WPT, watering pot tubules.
Figure 21. Stirpulina ramosa. A in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 21. Stirpulina ramosa. A dorsal view of the heart and associated pericardial structures. AU/PG, auricle and pericardial gland; MM, mantle margin; OV, ovary; P, pericardium; PA, posterior adductor muscle; PE, periostracum; PEM, pallial elevator muscle; PRM, pallial retractor muscle; R, rectum; SRM, siphonal retractor muscle; V, ventricle.
Figure 10 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa
Figure 10. Stirpulina ramosa. The apices of the siphons as seen from the posterior aspect. ES, exhalant siphon; IS, inhalant siphon; ISP, inhalant siphon papillae; SP, siphonal papilla.
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