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576 results for “Asteroideae”
Figure 6. a–f in A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea)
Figure 6. a–f, Patiriella oriens sp. nov. a, actinal view of holotype, R = 28 mm (NMV F92983); b, abactinal ray, carinally doubly papulate for about two-thirds of ray length (ending at arrow), R = 25 mm (NMV F73152); c, abactinal interradius with moderately coarse spination and fringe of fairly fine inferomarginal spinelets, up to 15 per plate, R = 25 mm (NMV F73152); d, cleared abactinal view of paratype, with carinal series doubly papulate for most of ray length, R = 25 mm (NMV F92984); e, actinal ambulacra and interradii, R = 30 mm (NMV F73155); f (above), common forms of abactinal spinelets; f (below), common forms of actinal spines proximal to ambulacrum, with relatively long furrow spines (arrow).
Figure 3. a–f in A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea)
Figure 3. a–f, Patiriella gunnii (Gray). a, abactinal view, R = 40 mm (NMV F73273); b, abactinal ray, carinally doubly papulate for most of ray, R = 40 mm (NMV F73273); c, abactinal interradius with coarse spination and fringe of stout inferomarginal spinelets, R = 22 mm (WAM Z8948); d, cleared abactinal view, with numerous papulae and secondary plates, R = 35 mm (WAM Z8952); e, actinal ambulacra and interradius, lacking suboral spines (arrow), R = 40 mm (NMV F73273); f (above), common forms of abactinal spinelets; f (below), common forms of actinal spines proximal to ambulacrum, with very short interradial spines (arrow).
Figure 5. a–f in A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea)
Figure 5. a–f, Patiriella occidens sp. nov. a, actinal view of holotype, with distinctively elongate rays, R = 35 mm (WAM Z8951); b, abactinal ray, carinally doubly papulate for most of ray (ending at arrow), and coarse cover of abactinal spinelets, R = 25 mm (WAM Z9491); c, abactinal interradius with coarse spination and fringe of stout inferomarginal spinelets, up to 10 per plate, R = 30 mm (WAM Z9483); d, cleared abactinal view of paratype, with carinal plates doubly papulate for all of ray shown, R = 31 mm (NMV F92971); e, actinal ambulacra and interradii, with oral plates lacking suboral spines, R = 25 mm (WAM Z9491); f (above), common forms of abactinal spinelets; f (below), common forms of actinal spines proximal to ambulacrum, with projecting subambulacral spines (arrow).
Figure 2. a–c in A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea)
Figure 2. a–c, Asterina gunnii Gray, 1840, lectotype, R = 24 mm (BMNH 40.3.9.10, dry). a, abactinal view (extensively cleared); b, abactinal ray (extensively cleared); c, actinal ambulacra and interradius, with single stout subambulacral spines per plate (arrow) and very short interradial spines. d–f, Patiriella brevispina H.L. Clark, 1938, paratype, R = 20 mm (AM J6181, dry). d, abactinal view; e, abactinal ray; f, actinal ambulacra and interradius, with single stout subambulacral spines per plate (arrow) and very short interradial spines.
Figure 1 in A molecular and morphological review of the asterinid, Patiriella gunnii (Gray) (Echinodermata: Asteroidea)
Figure 1. One of 1000+ optimal MP trees (863 steps) derived from analysis of CO1 sequence data. Numbers at nodes are bootstrap percentages based on 500 replicate analyses. MOL codes refer to specimens obtained for the current study. AM codes refer to Australian Museum specimens. Previously published sequences (Hart et al., 1997) are indicated in bold. Geographic origin of samples is indicated: Tasmania (T), Victoria (V), New South Wales (N), South Australia (S), Western Australia (W).
Fig. 2. Odontohenricia occasus n in A New Shallow-water Species of the Genus Odontohenricia from Northern Japan (Asteroidea: Spinulosida: Echinasteridae)
Fig. 2. Odontohenricia occasus n. sp., holotype, NSMT E-13876. A, Live specimen, abactinal (left) and actinal (right) views; B, denuded abactinal surface of the proximal portion of the arm; C, abactinal surface of the proximal portion of the arm; D, denuded lateral to actinal surface of the whole arm length; E, lateral to actinal surface at the proximal portion of the arm; F, distal view of 9th adambulacral plate, 8th and 9th adambulacral plates were excised from the arm; G, oral region, showing unpaired and enlarged oral spines (arrow heads). Abbreviations: ab, abactinal plates; ac1, first actinal series; ac2, second actinal series; ad, adambulacral series; f, furrow spine; im, inferomarginal series; pa, papulae; ps, pseudopaxillae; sm, superomarginal series; ss, subambulacral spines. Scale bars indicate 10 mm for A, 1 mm for B–G. Proximal is left in B–E.
Fig. 3 in A New Shallow-water Species of the Genus Odontohenricia from Northern Japan (Asteroidea: Spinulosida: Echinasteridae)
Fig. 3. SEM images of spines of Odontohenricia occasus n. sp. and Odontohenricia hayashii. A, Abactinal spines of O. occasus n. sp., holotype, NSMT E-13876 (above), paratype, RTMECH4 (bellow); B, unpaired and enlarged oral spines of O. occasus n. sp., holotype, NSMT E-13876 (left), paratype, RTMECH4 (right); C, abactinal spines of O. hayashii, NSMT E-12592 (left four), NSMT E-13879 (right three); D, unpaired and enlarged oral spines of O. hayashii, NSMT E-13878 (left), NSMT E-12592 (center), and NSMT E-13879 (right, tip is partially broken), showing the hyaline area at the tip (arrow heads). Scale bar indicates 0.1 mm in all images. Distal side is left in B and D.
Figure, 18. Tegulaster alba (R = 5 mm, paratype, NMV F45118): a, abactinal view; b, actinal view. in A molecular and morphological revision of genera of Asterinidae (Echinodermata: Asteroidea)
Figure, 18. Tegulaster alba (R = 5 mm, paratype, NMV F45118): a, abactinal view; b, actinal view.
Figure 1 in A new asterinid genus from the Indo-West Pacific region, including five new species (Echinodermata: Asteroidea: Asterinidae)
Figure 1. Distributions of the type localities of the six species of Ailsastra gen. nov.
FIGURE 2. A–F. Trindade Island. A. Rocky beach and tide pool. B–F in Asteroidea (Echinodermata) from shallow-waters of the remote oceanic archipelago Trindade and Martin Vaz, southeastern Atlantic, with taxonomic and zoogeographical notes
FIGURE 2. A–F. Trindade Island. A. Rocky beach and tide pool. B–F. Sublittoral habitats at water depths of less than 30 m: B. Calcareous reefs and rhodolith beds. C. Rocky and calcareous boulders of various sizes. D. Sand bottom with patches of calcareous reefs. E. Mixed sand, gravel, rocky bottoms with patches of sponges and macro algae. F. Calcareous reefs with algal mats.
FIGURE 17. Sthenaster emmae. A. Central Plateau scarp, 870 m. B. Central Plateau Scarp, 874 m C. Central Plateau Scarp, 865 m D in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 17. Sthenaster emmae. A. Central Plateau scarp, 870 m. B. Central Plateau Scarp, 874 m C. Central Plateau Scarp, 865 m D. Richardson's Jellyfish, 865 m
FIGURE 15. Sibognaster bathyheuretor n in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 15. Sibognaster bathyheuretor n. sp. Holotype. USNM 1507293 A. Abactinal surface. Scale bar=5.0 mm. B. Close up abactinal surface. Scale bar=8.0 mm. C. Oral surface. Scale bar=5.0 mm. D. Furrow spination. Scale bar=1.0 mm. E. Lateral view showing marginal plate surface. Scale bar=2.0 mm.
FIGURE 20. Velatida. A. Remaster palmatus. Stetson Mesa Terrace, 445.4 m. B in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 20. Velatida. A. Remaster palmatus. Stetson Mesa Terrace, 445.4 m. B. Large specimen (30.0 cm total diameter) of Pythonaster atlantidis, NW Florida Escarpment, 1970 m. C and D. Pythonaster atlantidis sponge predation. DeSoto Canyon, 2604 m, showing dorsal and oral views (C&D respectively). E. Feeding on hexactinellid sponge. Jaguey Spur, off Puerto Rico, 2668 m. Feeding.
FIGURE 16. Sibogaster bathyheuretor n in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 16. Sibogaster bathyheuretor n. sp. In situ. A. Holotype. USNM 1507293 West Florida Escarpment, Gulf of Mexico, 2597 m. B. Entrenched in sediment, Perdido Canyon, Gulf of Mexico, 26.1466, 94.86662, 2777 m, C. Feeding on antipatharian. West Florida Escarpment, Gulf of Mexico, 2192.9m. D. Feeding on sponges/sargassum West Florida Escarpment, Gulf of Mexico, 2138 m.
FIGURE 6. Unidentified species and Ceramaster grenadensis. A. Unidentified genus and species 1 in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 6. Unidentified species and Ceramaster grenadensis. A. Unidentified genus and species 1, NW Florida Escarpment, Gulf of Mexico, 2178 m. B. C. grenadensis in situ feeding. Unidentified stalks emerging from below (indicated with arrows). Richardson Scarp, North Atlantic. 897 m C. C. grenadensis feeding on coral rubble. Richardson Scarp, North Atlantic. 954 m D. C. grenadensis with yellow scale worm associate (indicated by arrow). Okeanos Ridge, 734 m.
FIGURE 3. A in A new comb-star (Asteroidea, Astropectinidae) from the Upper Triassic (Carnian) of China
FIGURE 3. A, First occurrence of selected neoasteroid orders and families (data from Gale 2011, 2018). B, stratigraphically calibrated consensus tree from Gale (2011, text-fig. 27), showing that the order of first occurrences matches the topology of the tree. This is a strict consensus tree, unconstrained simultaneous analysis, default outgroup, optimised to deltran, based on morphological characters.
FIGURE 2. A–H in A new comb-star (Asteroidea, Astropectinidae) from the Upper Triassic (Carnian) of China
FIGURE 2. A–H, Eoastropecten sechuanensis gen. et sp. nov., marginal ossicles. A, E, holotype superomarginal in abactinal (A) and proximal (E) view (MHI2183/1). B, paratype superomarginal in proximal/distal view (MHI2183/6). C, D, paratype inferomarginal in actinal (C) and distal (D) views (MHI2183/3). B, paratype superomarginal in proximal/distal views (MHI2183/2). F–H, paratype superomarginals in abactinal view (MHI2183/4, /5). I, unidentified astropectind superomarginal in abactinal view (NHMUK EE 17700). J, astropectinid superomarginal in abactinal view (NHMUK PI EE 17701). K, L, marginals of living astropectinid Craspidaster hesperus (Müller & Troschel, 1840), J, superomarginal in abactinal view. K, L, supero-inferomarginal pair. A–H, Maantang Formation (Carnian, Triassic), sample C30, Jiancougou, Sechuan Province, China. I, Lower Oxfordian, Andelot-Morval, Départment du Jura, France. J–L, Recent, Hong Kong.
FIGURE 1. Astropectinid morphology. A, B in A new comb-star (Asteroidea, Astropectinidae) from the Upper Triassic (Carnian) of China
FIGURE 1. Astropectinid morphology. A, B, Coulonia reidi (Blake & Reid, 1998), interradial fragment NHMUK PI EE 17699). A, abactinal surface, to show paxillae and superomarginals with intervening intermarginal fascioles. B, actinal surface, to show inferomarginal ossicles and imbricating actinal plates, in rows separated by grooves representing extensions of the intermarginal fascioles towards the ambulacral groove. C, Tethyaster sp. actinal surface, denuded of spines and smaller ossicles. Note the deep intermarginal fascioles, and the grooves extending across the actinal surface to the ambulacral groove. A.S. Gale Collection. A, B, Grayson Formation, Graysonites wacoense Zone, Cenomanian, Dottie Lynn Lane, Fort Worth, Texas, USA. C, present day, North Atlantic.
FIGURE 4. A. Henricia fragilis n in Two new deep-sea species of the genus Henricia (Asteroidea: Spinulosida Echinasteridae) from Japanese waters
FIGURE 4. A. Henricia fragilis n. sp. Holotype, NSMT E-13165. A. whole body, abactinal and actinal views. B. part of abactinal side, near the base of arm. C. denuded abactinal surface from proximal-most portion of arm, showing secondary abactinal plates (arrow heads). D. abactinal pseudopaxillae from proximal-most portion of arm. E. part of denuded ventrolateral surface, proximal-most to one-third the length of arm. F. part of lateral surface at half the length of arm. G. part of actinal surface at proximal-most arm. H. furrow spines, the Arabic numerals 12 and 13 indicate furrow spines which stand on 12th and 13th adambulacral plates, respectively. Abbreviations: (S) superomarginal series, (I) inferomarginal series, (V1) first ventrolateral series, (V2) second ventrolateral series, (A) adambulacral series. Scale bars indicate 10 mm for A, 1 mm for B–H. Proximal is left in B–H.
FIGURE 5 in Two new deep-sea species of the genus Henricia (Asteroidea: Spinulosida Echinasteridae) from Japanese waters
FIGURE 5. SEM images of lateral and top view of abactinal spines from basal arm. A. Henricia margarethae n. sp. Holotype, NSMT E-13349. B. H. margarethae n. sp. Paratype, NSMT E-7186. C. Henricia fragilis n. sp. Holotype, NSMT E-13165. Scale bar indicates 0.1 mm.
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