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12 results for “Thecidellina”
Figure 4 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 4. Thecidellina maxilla AM C.593655. (A) Ventral valve interior with tubercles on valve floor and long hemispondYlium prongs reaching past the teeth. (B) Dorsal valve interior with partiallY fused spicule canopY. (C) Dorsal valve interior with brachial bridge and calcitic pole broken off showing triangular base. (D) Lateral view of dorsal valve interior with prominent septum blade. (E) Close-up of partiallY infilled spicule canopY. (F) Close-up of broken base of calcitic pole and verY fine median spur on the cardinal process. Abbreviations: cpb, calcitic pole base; ms, median spur.
Figure 5 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 5. Thecidellina maxilla AM C.593656. (A) Ventral valve interior with tubercle-ridges and cup-shaped hemispondYlium. (B) Close-up of cup-shaped hemispondYlium, free from valve floor. (C) Dorsal valve interior with sparse canopY spicules. (D) SlightlY oblique dorsal valve interior. (E) Lateral view of dorsal valve interior with prominent blade on septum. (F) Close-up of tubercles at base of septum and on anterior margin. (G) Close-up of septum tip, marsupial orifice and ovarial notches. (H) Oblique close-up of curved calcitic pole attached to brachial bridge. (I) Posterior view of dorsal interior, calcitic pole divides visceral foramen, wide visceral gap without calcitic connections. Abbreviations: cp, calcitic pole; tr, tubercle-ridge; vg, visceral gap.
Figure 6 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 6. Thecidellina maxilla AM C.593657. (A) Ventral valve interior. (B) Close-up of hemispondYlium. (C) SlightlY oblique view of dorsal valve interior. (D) Lateral view of dorsal valve interior. (E) Close-up of tip of septum, marsupial orifice, calcitic pole and ovarial notches. (F) Brachial cavitY with stubbY spicules (male specimen?). (G) Posterior of dorsal valve. (H) Close-up of calcitic pole joining the thin median spur on the cardinal process. (I) Lateral adductor muscle scar on right of cardinal process. Abbreviations: cc, calcitic connections.
Figure 2 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 2. Thecidellina maxilla. (A–B) Scan of illustrations from HedleY (1899). (A) Illustration of a dorsal valve interior with tinY cardinal process. (B) Illustration of a ventral valve interior with tubercles on valve floor and long hemispondYlium prongs. (C) AM C.006202; SLR camera image of interior of dorsal valve with a wide, concave septum and small canopY spicules (note the missing valve posterior). (D) SLR camera image of interior of the ventral valve showing tuberculate valve floor and the posterior part of the dorsal valve still attached.
Figure 1 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 1. Map of published localities where material has been identified as Recent Thecidellina maxilla.
Figure 3 in Description and Figures of New Lectotype and Paralectotype Material of Recent Brachiopod Thecidellina maxilla (Hedley, 1899)
Figure 3. Thecidellina maxilla lectotYpe AM C.593654 (except C). (A) Ventral valve interior with tubercles. (B) Exterior of ventral valve with cementing surface underneath. (C) AM C.593657; exterior of ventral valve with cementing surface at posterior. (D) Close-up of cup-shaped hemispondYlium. (E) Exterior of dorsal valve. (F) Interior of dorsal valve with spicules over the brachial chamber and no calcitic connections between brachial bridge and intrabrachial ridge. (G) Lateral view of dorsal valve interior. (H) Close-up of tip of septum, marsupial orifices and ovarial notches. (I) Close-up of tubercles at base of septum and on anterior margin. (J) Posterior view of dorsal interior with calcitic pole attached to brachial bridge and base of cardinal process. Abbreviations: ci, cicatrix; cp, calcitic pole; mo, marsupial orifice; on, ovarial notch.
FIGURE 13. Thecidellina minuta Cooper, 1981 in Recent Brachiopoda from the Norfolk Ridge, New Caledonia, with description of four new species
FIGURE 13. Thecidellina minuta Cooper, 1981, Norfolk Ridge, Norfolk 1 Stn DW 1723, 266–267 m: A, dorsal view of complete specimen, visible pseudodeltidium, MNHN BRA-3177; B, C, inner view of ventral valve and titled enlargement to show hemispondylium in form of two plates, MNHN BRA-3178; D, inner view of dorsal valve, visible interconnected canopying spicules, MNHN BRA-3179; E, F, inner and posterior views of dorsal valve, visible brachial bridge supported by a slender calcitic pole, MNHN BRA-3180; G-I, inner, posterior and lateral views of dorsal valve, visible interconnected canopying spicules and a slender pole, MNHN BRA-3181. All SEM.
FIGURE 4. Google Earth 2015 in Checklist of Recent thecideoid brachiopods from the Indian Ocean and Red Sea, with a description of a new species of Thecidellina from Europa Island and a re-description of T. blochmanni Dall from Christmas Island
FIGURE 4. Google Earth 2015 Digital Globe map of Christmas Island, showing collecting areas for Thecidellina blochmanni and T. cf. blochmanni at Flying Fish Cove and West White Beach (Bay), respectively. Flying Fish Cove coordinates are lat. 10° 25'S, long. 105° 40'E.
FIGURE 2 in Checklist of Recent thecideoid brachiopods from the Indian Ocean and Red Sea, with a description of a new species of Thecidellina from Europa Island and a re-description of T. blochmanni Dall from Christmas Island
FIGURE 2. NASA image IS-5005-E-9408 of Europa Island, showing collecting locality Anse Gabriel (AG). Centre Point coordinates are lat. 22° 30'S, long. 40° 30'E.
FIGURE 3. Thecidellina blochmanni Dall, 1920 in Checklist of Recent thecideoid brachiopods from the Indian Ocean and Red Sea, with a description of a new species of Thecidellina from Europa Island and a re-description of T. blochmanni Dall from Christmas Island
FIGURE 3. Thecidellina blochmanni Dall, 1920 (A–O). A–E. SEMs of different views of the dorsal valve of the suggested neotype ZMB Bra 205 from Flying Fish Cove, Christmas Island. F–J. SEMs of similar views of a young specimen, topotype ZMB Bra 204 from the same locality. K–O SEMs of similar views of WAM 211798 specimen identified here as T. cf. blochmanni from West White Beach, Christmas Island. All specimens show the cardinal process of the dorsal valve with prominent median keel, large diductor scars with elevated median ridge, and massive calcitic deposits, ("bouffant-like" in 3K) in anterior part of brachial lobes. See text for dimensions. All specimens in MfN, Berlin.
FIGURE 1 in Checklist of Recent thecideoid brachiopods from the Indian Ocean and Red Sea, with a description of a new species of Thecidellina from Europa Island and a re-description of T. blochmanni Dall from Christmas Island
FIGURE 1. Thecidellina europa sp. nov., all specimens from Anse Gabriel, cave, 55m, Europa Island. A–H. Holotype, A. External view, showing both valves. B. Valves of previous specimen separated to show internal details of the ventral valve. C– D. Cardinal area of previous specimen tilted and enlarged to show planodeltidium, teeth, hemispondylium and curved prongs. E–H. Interior of dorsal valve of holotype. E. Showing details of the median septum and deep visceral cavities. F–G. Enlargement of posterior end of dorsal valve, showing cardinal process, spur (sp) and part of the brachial bridge. H. Side view, showing shell sloping upwards posteriorly and details of the median septum and tuberculate shell. I. Paratype 1, dorsal valve interior, showing lophophore, median septum and cardinal process with diductor muscles attached. J. Paratype 2, dorsal valve interior with cardinal process, bridge and spine, K. Paratype 3, ventral valve interior showing deep visceral cavities separated by prominent central ridge. L. Paratype 4, dorsal valve interior with finely spiculate canopy. M. Paratype 5, ventral valve interior, showing tooth (t), lateral adductor muscles (a), submedian adductor muscles (s) diductor muscles (d), and prongs (p), the latter attached to a flat hemispondylium centrally placed and attached to the valve floor. N. Paratype 6, dorsal valve showing cluster of diductor (d) muscles attached to the cardinal process. O. Paratype 7, ventral valve hinge area, showing same muscles as in M but with the proximal termination of the hemispondylium (hs) curled up free of the valve floor. All figures are scanning electron micrographs. See text for dimensions and specimen numbers. All specimens in NBM, Saint John.
TEXT-FIGURE 3. Scatterplots of morphometric measurements of Thecidellina leipnitzae sp. nov. Abbreviations: L, length; W, width; LDV, length of dorsal valve; T (max), maximal thickness; Lint, length of the interarea, Wint, width of hinge line or interarea. Relationships between ratios L/W and width, LDV/W and width, T(max)/W and width, Lint/W and width and Wint/W and width. Linear regression and regression coefficient (R²) indicated. The regression coefficient (R²) is indicated. N is the number of specimens measured. in Recent thecideide brachiopods from a submarine cave in the Department of Mayotte (France), northern Mozambique Channel
TEXT-FIGURE 3. Scatterplots of morphometric measurements of Thecidellina leipnitzae sp. nov. Abbreviations: L, length; W, width; LDV, length of dorsal valve; T (max), maximal thickness; Lint, length of the interarea, Wint, width of hinge line or interarea. Relationships between ratios L/W and width, LDV/W and width, T(max)/W and width, Lint/W and width and Wint/W and width. Linear regression and regression coefficient (R²) indicated. The regression coefficient (R²) is indicated. N is the number of specimens measured.
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