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FIGURE 11 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 11. Poecillastra compressa (Bowerbank, 1866). A. Whole specimen from western Norway, oscule side [ZMBN 77932]; B. Thick section showing cortex and choanosome. os: oscule. Scale: 4 mm. [ZMBN 77932]; C. Whole specimens from Cape Verde, pore side [ZMAPOR 7290]; D. Whole specimen from Røst Reef, northern Norway, pore side. Scale: 3 cm [ZMBN 85246]. E. Orange specimens from Solan Bank, northern Scotland, 80 m depth (© JNCC and Annika Clements). Scale: 5 cm; F. White and orange specimen from Solan Bank, northern Scotland, 80 m depth (© JNCC and Annika Clements). Scale: 5 cm.
FIGURE 22 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 22. Geographical distribution of Thenea muricata (Bowerbank, 1858). Localities given by Hansen (1885), Fristedt (1887), Sollas (1888), Topsent (1913) and Stephens (1915) were discarded not knowing if some of these could be T. valdiviae.
FIGURE 15 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 15. Spicules of Vulcanella cf. aberrans (Maldonado & Uriz, 1996) [ZMBN 80959]. A. Ectosomal oxea I; B. Oxea II; C. Irregular triaenes with oxeas II and microxeas; D. Microxea III; E. Microxeas I, regular and centrotylote. plsr: plesiaster. Detail of the ringed pattern in the middle of the centrotylote microxea I; F. Spiraster; G. Bow-shaped metaster. Same scale as F; G. Small plesiaster. Same scale as F; I. Plesiasters. Notice the bow shape of the two lower ones.
FIGURE 14 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 14. Vulcanella cf. aberrans (Maldonado & Uriz, 1996) [ZMBN 80959]. A. Whole specimens attached to small stone. The polychaete living at its base is Eunice pennata (Müller) (J. Kongsrud, pers. comm.); B. Thick section showing the skeletal organization. Scale: 1 mm; C. Detail of thick section showing the thin ectosome. Scale: 1 mm; D. Detail of thick section showing the irregular triaenes present at the surface (arrows). Scale: 1 mm; E. Atrial sieve. Scale: 500 µm; F. Thick section showing the skeletal organization of the atrial sieve. Scale: 3 mm; Vulcanella aberrans (Maldonado & Uriz, 1996). G. Whole specimen [ZMAPOR 18012]; H. Whole specimen. Scale: 1 cm [ZMAPOR 21170].
FIGURE 8 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 8. Spicules of Pachastrella monilifera Schmidt, 1868 [MNHN DT-756, holotype]. A. Large and small calthrops; B. Microxea I; C. Microxea II; D. microstrongyle; E. Amphiasters.
FIGURE 25 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 25. Simplified molecular phylogeny of the Astrophorida focusing on the relationships within the Theneidae, modified from Cárdenas et al. (2011, Fig. 2). Maximum-likelihood tree made from concatenated sequences of COI (Folmer fragment) and 28S (C1–D2 domains). Bootstrap nodal support values>50% are given above the nodes (2,000 replicates).
FIGURE 18 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 18. Streptasters of Norwegian species of Thenea. Streptasters of Thenea abyssorum Koltun, 1964 [ZMBN 85228]. A. Plesiaster; B. Spirasters; Streptasters of Thenea levis von Lendenfeld, 1907 [ZMBN 85230]. C. Plesiaster. Same scale as A; D. spirasters. Streptasters of Thenea muricata (Bowerbank, 1858) [ZMBN 85231]. E. Plesiaster; F. Spiraster; Streptasters of Thenea valdiviae von Lendenfeld, 1907. G. Plesiaster [ZMBN 85257]; H. Spirasters. Same scale as E. [ZMBN 85233].
FIGURE 4 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 4. Pachastrella nodulosa sp. nov. A. Whole specimen, top knobby surface. Scale: 3 cm [ZMBN 85243]; B. Whole specimen, under surface. Scale: 3 cm [ZMBN 85243]; C. Holotype, top knobby surface. Arrow points at oscule area. Scale: 2 cm [ZMBN 85242]; D. Cross-section of holotype showing the dense choanosome. Scale: 2 cm [ZMBN 85242]; E. Thick section of oscule area. Scale: 1 mm [ZMBN 85242, holotype]; F. Oscules. Scale: 5 mm [ZMBN 85244]; G. Specimen in situ (arrow) at the base of Paragorgia arborea (Linnaeus) as seen from the manned-submersible JAGO, Traenadjupet, northern Norway, 298 m. Specimen is approximately 30 cm in size; H. Specimen in situ as seen from the manned-submersible JAGO, Traenadjupet, northern Norway, 301 m. Specimen is approximately 20 cm in diameter.
FIGURE 2 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 2. Spicules of Characella pachastrelloides (Carter, 1876). A. Oxea I [ZMBN 80248]. mxI: microxea I; B. Oxea II [ZMBN 80248]; C. Microxea I [ZMBN 80248]; D. Dichotriaene [ZMBN 25629]; E. microxeas II [ZMBN 80248]; F. Amphiaster [ZMBN 80248]; G. Amphiaster [ZMBN 85225]; H. Amphiaster [ZMBN 25629]. Characella tripodaria (Schmidt, 1868) [MNHN-DT 756, holotype]. I. Whole specimen; J. Amphiasters. Notice the additional actines on the central shaft for the smaller one. Notice the underdeveloped actines and the disappearance of the central shaft on the largest one.
FIGURE 10 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 10. Comparaison of the morphology of large calthrops. All pictures were taken at the same scale: 1 mm. A. Pachastrella monilifera Schmidt, 1868 [MNHN DT-756, holotype]; B. Pachastrella nodulosa sp. nov. [ZMBN 85242, holotype]; C. Pachastrella ovisternata von Lendenfeld, 1894 [MNHN DCL-4065], arrow points at a dichotriaene; D. Pachastrella abyssi Schmidt, 1870 [MZS P0195, holotype].
FIGURE 20 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 20. Geographical distribution of Thenea levis von Lendenfeld, 1907. Localities from Steenstrup and Tendal (1982) and those from this study.
FIGURE 24. Thenea valdiviae von Lendenfeld, 1907. A in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 24. Thenea valdiviae von Lendenfeld, 1907. A. Whole specimen from Barents Sea, top view. Note the sieve on the oscule [ZMBN 85233]. Scale: 2 cm; B. Whole specimen, side view showing the poral area, also with sieve [ZMBN 85233]; C. Whole specimen from Freisfjorden (Møre), top view. Note the sieve on the oscule. Scale: 1 cm [ZMBN 85256]; D. Top surface of a young specimen covered with buds. p: pores. os: oscule. [ZMBN 85257]; E. Thick section showing the skeletal organization. Scale: 1 mm [ZMBN 85233].
FIGURE 21 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 21. Thenea muricata (Bowerbank, 1858) [ZMBN 85231]. A. Whole specimen, upper view showing oscule. Scale: 1 cm; B. Whole specimen, side view showing the pore area. Same scale as A; C. Thick section of ectosome and choanosome. Scale: 2 mm; D. Close-up of thick section showing dichotriaene, anatriaenes and a protriaene placed under the ectosome. Scale: 200 µm; E. Dichotriaenes. Notice the flexous rhabdome. Scale: 200 µm; F. Anatriaenes, large and small size. Scale: 200 µm.
FIGURE 23. Thenea schmidti Sollas, 1886 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 23. Thenea schmidti Sollas, 1886 [ZMAPOR 18036]. A. Whole specimen, upper view showing oscule. Scale: 1 cm; B. Whole specimen, side view showing the pore area. Scale: 1 cm; C. Thick section of ectosome and choanosome. Scale: 2 mm; D. Close-up of thick section showing the abundance of large plesiasters. Scale: 200 µm.
FIGURE 12 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 12. Spicules of Poecillastra compressa (Bowerbank, 1866) [ZMBN 77932]. A. Oxea I; B; Style. Mx: microxea; C. Short-shafted triaene; D. Microxea and detail; E. Plesiasters (with spirasters, for the lower one); F. Spiraster (upper one) to metaster (lower one).
FIGURE 7. Pachastrella monilifera Schmidt, 1868 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 7. Pachastrella monilifera Schmidt, 1868 [MNHN DT-410, holotype]. A. Whole specimen. Scale: 3 cm; B. Thick section showing the thin cortex and choanosome. Scale: 1 mm; Pachastrella ovisternata von Lendenfeld, 1907 [MNHN DCL- 4065]; C. Specimen. Scale: 3 cm; D. Thick section showing the thin cortex and choanosome. Scale: 1 mm; Pachastrella abyssi Schmidt, 1870 [MZS P0195, holotype]; E. Whole specimen (dry). Scale: 4 cm; F. Thick section showing the thin cortex and choanosome. Scale: 1 mm.
FIGURE 6 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 6. Geographical distribution of Pachastrella abyssi Schmidt, 1870, Pachastrella chuni Lendenfeld, 1907, Pachastrella monilifera Schmidt, 1868, and Pachastrella nodulosa sp. nov. in the Atlantic Ocean.
FIGURE 19. Thenea levis von Lendenfeld, 1907 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 19. Thenea levis von Lendenfeld, 1907 [ZMBN 85230]. A. Whole specimen. Scale: 2 cm; B. Detail showing the cribriporal pores, with a thick overhang. Scale: 4 mm; C. Thick section of sieved pores. Scale: 2 mm; D. Thick section showing skeletal organization of ectosome. Scale: 1 mm; E. Anatriaene. Scale: 100 µm; F. Protriaene. Scale: 500 µm.
FIGURE 17. Thenea abyssorum Koltun, 1964 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 17. Thenea abyssorum Koltun, 1964 [ZMBN 85228]. A. Whole specimen. Scale: 1 cm; B. Thick section showing the skeletal organization. p: pores. os: oscule. rt: root. Scale: 5 mm; C. Thick section showing dichotriaenes supporting the ectosome. Scale: 500 µm; D. Dichotriaene. Scale: 100 µm; E. Anatriaene I. Scale: 200 µm; F. Anatriaene II, with a closedumbrella shape. Scale: 100 µm.
FIGURE 9 in A review of Norwegian streptaster-bearing Astrophorida (Porifera: Demospongiae: Tetractinellida), new records and a new species
FIGURE 9. Spicules of Pachastrella abyssi Schmidt, 1870 [MZS P0195, holotype]. A. Large and small calthrops; B. Microxea. mstr: microstrongyles; C. Microstyle and microstrongyles; D. Amphiaster; E. Amphiaster; F. Sanidaster-like amphiaster; G. Microstrongyles; H. Microstrongyles, amphiasters and a microrhabdose streptaster; I. Detail of a microrhabdose streptaster.
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