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10 results for “Amphithyris”
FIGURE 10 in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 10. Geographical distribution of the genus Amphithyris. A. seminula (■); A. buckmani (●); A. hallettensis (▲); A. richardsonae (+); A. parva (x); A. cavernicola n. sp. (*); A. comitodentis n. sp. (ο). Note that both collecting stations for A. hallettensis give only the longitudinal position, as they were found at lower latitudes in Antarctic waters not shown in the map.
FIGURE 8. Amphithyris cavernicola n in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 8. Amphithyris cavernicola n. sp., Coral Sea, Australia; A. Paratype ZMB Bra 2185. Lateral view showing ventribiconvex shells. B. Paratype QM G333508. Smooth dorsal valve exterior. C–E. Holotype QM G333507. C. Dorsal valve interior. D. Detail of punctae. E. Close-up of amphithyrid foramen. F. Paratype ZMB Bra 2175. Dorsal valve interior showing (dried) schizolophous lophophore and gonads. Scale bars: A, B, C, E and F = 200µm; D = 50µm.
FIGURE 9. Amphithyris cavernicola n in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 9. Amphithyris cavernicola n. sp., Coral Sea, Australia; A–C. Paratype ZMB Bra 2180. A. Ventral valve interior, showing low median septum and muscle impressions visible. B. Close-up of posterior region of ventral valve interior. C. Lateral view of ventral median septum and hinge teeth. D. Holotype QM G333507. Ventral valve exterior, with tubercles. E. Paratype ZMB Bra 2178. Broken ventral valve, exterior view, exposing secondary shell layer. F–H. Paratype ZMB Bra 2179. F. Protegulum with one middle and two lateral ridges. G–H. Tubercles on ventral valve exterior. I–L. Paratype ZMB Bra 2187. SEM backscatter images in environmental mode. I. Ventral valve exterior showing weak capillae. J–L. Ventral valve exterior showing exterior end of brushes with tubercles. Scale bars: A–E = 200µm; F, H and J = 50µm; G, I, K, L = 10µm.
FIGURE 5 in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 5. Amphithyris seminula (Philippi, 1836). Sicily, Mediterranean Sea. A–B. Paralectotype ZMB Bra 1675. A. Dorsal valve interior with low median septum. B. Lateral view of dorsal valve. C–F. Lectotype ZMB Bra 2146. C. Close-up of dorsal valve interior with short socket ridges. D. Ventral valve interior. E. Close-up of ventral valve interior showing beak-like hinge teeth. F. Lateral view of ventral valve, showing smooth surface. Scale bars = 200µm.
FIGURE 7. Amphithyris cavernicola n in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 7. Amphithyris cavernicola n. sp., Coral Sea, Australia; A. Paratype ZMB Bra 2186 Ventral view showing attachment to coral rock; B. Paratype ZMB Bra 2175. Ventral view, showing schizolophous lophophore (L) and gonads (G). Scale bar = 200µm.
FIGURE 6. Amphithyris comitodentis n in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 6. Amphithyris comitodentis n. sp. A–C. Holotype NIWA 92391. A. Dorsal valve interior, showing low median septum. B. Ventral valve interior. C. Detail of B showing teeth in parallel orientation to hinge line highlighted by dashed lines. D. Paratype ZMB Bra 2054, ventral valve interior showing imprints of capillae and tooth orientation. E–F. Paratype ZMB Bra 2353. E. Ventral valve exterior with concentric growth lines. F. Close-up of ventral protegulum showing a wrinkled surface. Scale bars: A–E = 200µm; F = 20µm.
FIGURE 4 in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 4. Amphithyris parva MacKinnon, Hiller, Long & Marshall, 2008. A–F. Paratype NMNZ Br 1069. A. Dorsal valve interior showing absence of median septum. B. Close-up of dorsal interior with large amphithyrid foramen. C. Dorsal valve exterior with weak capillae. D. Ventral valve interior. E. Close-up ventral valve interior showing long straight hinge line. F. Ventral exterior with weak capillae. Scale bars = 200µm.
FIGURE 2. Amphithyris hallettensis Foster, 1974. A–F. Paratype USNM I 550094C. A. Dorsal valve interior showing median septum. B in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 2. Amphithyris hallettensis Foster, 1974. A–F. Paratype USNM I 550094C. A. Dorsal valve interior showing median septum. B. Close-up of dorsal median septum. C. Close-up of dorsal valve interior. D. Ventral valve interior showing slight imprints of capillae. E. Close-up of ventral valve interior. F. Ventral valve exterior with endopunctae visible. Samples not sputter coated and SEM back-scatter images in environmental mode. Scale bars = 200µm.
FIGURE 3 in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 3. Amphithyris richardsonae Campbell and Fleming, 1981; Holotype NZGS BR 2277. A. Ventral valve exterior with faint capillae and growth lines. Note the unusual width of the shell. B. Close-up of the ventral valve showing punctae and two tubercles ("hollow spinules"). C. Ventral valve interior showing small teeth and mid-valve muscle scars. Samples not sputter coated and SEM back-scatter images in environmental mode. Scale bars = 200 µm.
FIGURE 1. Coral rock with attached brachiopod specimens, ZMB Bra 2235 in Revision of the brachiopod genus Amphithyris (Rhynchonelliformea: Platidiidae) with descriptions of two new species
FIGURE 1. Coral rock with attached brachiopod specimens, ZMB Bra 2235. White crosses indicate the position of specimens of A. cavernicola n. sp. Scale bar = 5 cm.
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