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80 results for “Euryalidae”
Fig. 44. Families Euryalidae Gray, 1840 in New species, redescriptions and new records of deep-sea brittle stars (Echinodermata: Ophiuroidea) from the South China Sea, an integrated morphological and molecular approach
Fig. 44. Families Euryalidae Gray, 1840 and Gorgonocephalidae Ljungman, 1867, Maximum likelihood (ML) tree based on partial COI sequences (bootstrap support values were generated with rapid bootstrapping algorithm for 1000 replicates). Abbreviations: AN = Antarctica; IC = Inter-Clade; NZ = New Zealand; RI = Reunion Island; SC = Sub-Clade; SCS = South China Sea; SO = Sothern Ocean.
Fig. 9. Euryalidae Gray, 1840 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 9. Euryalidae Gray, 1840, Euryale aspera Lamarck, 1816. A, G = digital images; B–F, H–J = SEM images. A. adGP in situ. B. adGP abradial view. C. adGP, dorso-adradial view. D. Radial shield, dorsal view. E. Radial shield, latero-ventral view. F. abGP. G. Section of ventral disc. H. Adoral shields and madreporite, inner view. I. Madreporite, inner aspect. J. Other madreporite, inner aspect. Scale bars: A–H = 1 mm; I–J = 0.5 mm
Text-fig. 2. Eospondylus primigenius (STÜRTZ) Bundenbach, Eschenbach-Bocksberg quarry, Lower Devonian, Lower Emsian (Zlichovian), Hunsrück Slate,, NM S 4764, x 3. Specimen with ventral arm coiling. The specimen is on its dorsum in slate with all five rays curled ventrally inward toward mouth area on underside of disk. Barely visible are tips of two jaws; slightly exposed are proximal parts of rays in oral view extending outward from disk. The location of abrupt ventral bending of rays is indicated by emergence from slate of five rays in aboral view that point inward toward buried disk. Based on ventral bending of rays and intimate association with crinoids Eospondylus has been interpreted as stratigraphic first occurrence of Order Euryalida, which contains epizoic gorgonocephalid and euryalid basket-stars of modern oceans. This status is rejected using new evidence from isolated vertebrae. [Photo by Alexander Glass]. in Isolated Ossicles Of The Family Eospondylidae Spencer Wright, 1966, In The Lower Devonian Of Bohemia (Czech Republic) And Correction Of The Systematic Position Of Eospondylid Brittlestars (Echinodermata: Ophiuroidea: Oegophiurida)
Text-fig. 2. Eospondylus primigenius (STÜRTZ) Bundenbach, Eschenbach-Bocksberg quarry, Lower Devonian, Lower Emsian (Zlichovian), Hunsrück Slate,, NM S 4764, x 3. Specimen with ventral arm coiling. The specimen is on its dorsum in slate with all five rays curled ventrally inward toward mouth area on underside of disk. Barely visible are tips of two jaws; slightly exposed are proximal parts of rays in oral view extending outward from disk. The location of abrupt ventral bending of rays is indicated by emergence from slate of five rays in aboral view that point inward toward buried disk. Based on ventral bending of rays and intimate association with crinoids Eospondylus has been interpreted as stratigraphic first occurrence of Order Euryalida, which contains epizoic gorgonocephalid and euryalid basket-stars of modern oceans. This status is rejected using new evidence from isolated vertebrae. [Photo by Alexander Glass].
Fig. 12 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 12. Distribution of the main biogeographic components of species of Euryalida Lamarck, 1816 identified along the East Atlantic.
Fig. 9 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 9. SEM photographs of internal skeletal characters of specimens of Astrodendrum juancarlosi sp. nov. (MNCN 29.02/1534). A. Granule-shaped ossicles from disc. B. Ossicle from baseplates. C. Valve. D. Baseplate. E. Lateral arm plate. F. Arm spines. G. Distal view of vertebrae. H. Proximal view of vertebrae. I. Ventral view of vertebrae. J. Lateral view of vertebrae. K. Dorsal view of vertebrae. Abberviations: DT = depression for tentacle; NC = nerve canal; WC = water canal.
Fig. 6 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 6. Map from the study area with the location of the stations where specimens of Ophiocreas oedipus Lyman, 1879 were collected during the ten surveys off Northwest Africa.
Fig. 3. A–B in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 3. A–B. Asteronyx loveni Müller & Troschel, 1842 collected from Mauritanian waters on Distichoptilum gracile Verrill, 1882. C. Asterochema inornatum Koehler, 1906 collected from Western Sahara waters on Paramuricea sp. Koelliker, 1865. D. Ophiocreas oedipus Lyman, 1879 collected from Western Sahara waters, on Acanthogorgiidae indet. E–F. Astrodendrum juancarlosi sp. nov. (LZM-UV Bissau-0810-06146), specimens collected from Guinea Bissau waters. Not to scale.
Fig. 11 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 11. Gorgonocephalus pustulatum (H.L. Clark, 1916) (LZM-UV Bissau-0810-18012). A. Dorsal view. B. Ventral view. C. Detail of dorsal view. D. Detail of ventral view. E. Detail of ventral disc and arm base. F. Arm tip. G–H. Arm spine. I–J. Spine of disc.
Fig. 1 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 1. Map from the study area with the location of the 1298 bottom trawling stations carried out during the ten surveys off Northwest Africa.
Fig. 5 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 5. Map from the study area with the location of the stations where specimens of Asteroschema inornatum Koehler, 1906 were collected during the ten surveys off Northwest Africa.
Fig. 10 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 10. Map from the study area with the location of the stations where specimen of Gorgonocephalus pustulatum (H.L. Clark, 1916) was collected during the ten surveys off Northwest Africa.
Fig. 7 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 7. Map from the study area with the location of the stations where Astrodendrum juancarlosi sp. nov. were collected during the ten surveys off Northwest Africa.
Fig. 2 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 2. Map from the study area with the location of the stations where specimens of Asteronyx loveni Müller & Troschel, 1842 were collected during the ten surveys off Northwest Africa.
FIGURE 9 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 9. Asteroporpa (Asteromoana) koyoae sp. nov., one paratype (NSMT E-6341-B). SEM photographs of arm spines. A–B, arm spines from one tentacle pore at the basal portion of the arm, inner most (A) and outer most (B); C, outer most arm spine at the middle portion of the arm; D, an arm spine at the distal portion of the arm with an arc indicating reticular structure.
FIGURE 5 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 5. Asteroporpa (Asteromoana) muricatopatella sp. nov., one paratype (NSMT E-5619-B). SEM photographs of internal ossicles. A–B, a hooklet-bearing plate (A) and a hooklet (B) at the aboral periphery of the disc; C–D, cone-shaped dermal ossicles at the aboral periphery of the disc, external (C) and lateral (D) views; E, a hooklet at the middle portion of the arm; F–G, plate-shaped dermal ossicles at the aboral basal portion of the arm, external (F) and lateral (G) views; H–I, plate-shaped dermal ossicles at the aboral distal portion of the arm, external (H) and lateral (I) views; J–K, arm spines from basal portion of the arm (J) and distal portion of the arm (K) with an arc indicating reticular structure. Arrows indicate the orientation (D, G, I): ext, external side; int, internal side.
FIGURE 4 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 4. Asteroporpa (Asteromoana) muricatopatella sp. nov., holotype (NSMT E-6548). A, lateral interradius of the disc; B, a madreporite; C, aboral view of basal portion of the arm; D, oral view of basal portion of the arm; E, lateral view of middle portion of the arm; F, oral view of distal portion of the arm; G, aboral view of distal portion of the arm. Abbreviations: AS, arm spine; GS, genital slit; M, madreporite. Arrows indicate transverse rows of hooklet-bearing plates (C, E, G).
FIGURE 8 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 8. Asteroporpa (Asteromoana) koyoae sp. nov., one paratype (NSMT E-6341-B). SEM photographs of internal ossicles. A–B, a hooklet-bearing plate (A) and a hooklet (B) at the aboral periphery of the disc; C–D, plate-shaped dermal ossicles at the periphery of the radial shields, external (C) and lateral (D) views; E–F, cone-shaped dermal ossicles at the aboral periphery of the disc, external (E) and lateral (F) views; G, a hooklet at the basal portion of the arm; H–I, diamond-shaped dermal ossicles at the aboral basal portion of the arm, external (H) and lateral (I) views. Arrows indicate the orientation (D, F, I): ext, external side; int, internal side.
FIGURE 2 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 2. Asteroporpa (Asteromoana) muricatopatella sp. nov., holotype (NSMT E-6548). A, aboral side; B, oral side.
FIGURE 3 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 3. Asteroporpa (Asteromoana) muricatopatella sp. nov., holotype (NSMT E-6548). A, aboral disc and basal portion of the arm; B, oral disc and basal portion of the arm; C, aboral central part of the disc; D, aboral periphery of the disc; E, aboral periphery of the disc, a hooklet-bearing plate is indicated by an arrow; F, aboral basal portion of the arm, hooklet-bearing plates are indicated by arrows; G, oral disc, a cone-shaped dermal ossicle is indicated by an arrow; H, jaws.
FIGURE 6 in Two new species of the subgenus Asteroporpa (Asteromoana) (Ophiuroidea: Euryalida: Gorgonocephalidae) from Japan
FIGURE 6. Asteroporpa (Asteromoana) koyoae sp. nov., holotype (NSMT E-6341-A). A, aboral disc and basal portion of the arm; B, oral disc and basal portion of the arm; C, aboral periphery of the disc; D, plate-shaped dermal ossicles at the periphery of the radial shield; E, aboral central part of the disc; F, oral disc; G, periphery of the oral disc, a cone-shaped dermal ossicle is indicated by an arrow; H, a jaw.
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