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31 results for “Spatangoida”
Figure 4 in A late Miocene record of the echinoid Maretia (Echinoidea, Spatangoida) from Victoria, Australia.
Figure 4. Generalised map of the Indo-Pacific Region showing localities where fossil specimens attributable to Maretia have been found (•).
Figure 2 in A late Miocene record of the echinoid Maretia (Echinoidea, Spatangoida) from Victoria, Australia.
Figure 2. Maretia sp. aff. planulata (Lamarck, 1816): A-C, adapical, adoral, left lateral and posterior views of NMV P324333; D, E, adapical and adoral views, and F, aboral ambulacrum V detail of NMV P324332, both specimens from the late Miocene, Tambo River Formation, Swan Reach, Victoria. G-I, adapical, adoral, left lateral and posterior views of extant specimen of Maretia planulata from the Philippines. Scale bar 10 mm unless otherwise stated.
Figure 1. A, B in A late Miocene record of the echinoid Maretia (Echinoidea, Spatangoida) from Victoria, Australia.
Figure 1. A, B, general location maps; C, map of East Gippsland, Victoria, from Bairnsdale to Lakes Entrance, showing locality NMV PL3110 at Swan Reach.
Figure 3 in A late Miocene record of the echinoid Maretia (Echinoidea, Spatangoida) from Victoria, Australia.
Figure 3. Maretia sp. aff. planulata (Lamarck, 1816): A, adapical view of NMV P324337 recording presence of four gonopores; B, partial adoral view of NMV P324338 showing phyllodes and small tubercules at termination of interambulacra with peristome; C, partial adapical view of NMV P324332 showing interambulacra 1 and ambulacrun I and II; D, E, adoral view and labrum detail of NMV P324336; F, adapical view of NMV P324331; G, partial adoral view of NMV P324332 showing an indistinct section of subanal fasciole crossing episternal plates; H, partial posterior view of NMV P324333 with re-entrant section of subanal fasciole adjoining the periproct. Specimens from the late Miocene, Tambo River Formation, Swan Reach, Victoria. Scale bar 10 mm unless otherwise stated.
FIG. 9 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 9. — Analyse Factorielle en Composantes Principales (ACP) réalisée sur cinq variables (W/L, WP/L, LP/L, WA/L et LA/L), à partir de 39 spécimens. Même légende qu'en Fig. 4.
FIG. 7 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 7. — Forme des pétales antérieurs et postérieurs; A, B. gr. atlantica, les points indiquent que les deux pétales postérieurs restent indépendants; B, B. gr. lyrifera.
FIG. 8 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 8. — Diagramme montrant les variations de la profondeur de la gouttière (PG/L) en fonction de la taille (L) chez B. gr. atlantica et B. gr. lyrifera. Même légende qu'en Fig. 4.
FIG. 5. — A-C in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 5. — A-C, Brissopsis gr. lyrifera, spécimens complets récoltés dans les calcaires marneux intragypses de Los Yesos (Messinien); D, Brissopsis gr. lyrifera, spécimen subcomplet récolté dans les marnes intragypses de Los Yesos et disloqué par la pluie; E, fragment de Brissopsis gr. lyrifera de Los Yesos avec des radioles en connexion. Échelles: 1 cm.
FIG. 2 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 2. — Localisation des niveaux à Brissopsis dans les gisements messiniens du bassin de Sorbas; A, La Mela; B, Cerro Mandras; C, Los Yesos.
FIG. 3 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 3. — Protocole de mesures utilisé pour l'analyse biométrique (exemple sur Brissopsis lyrifera). Abréviations: L, longueur du test; LP, longueur du pétale postérieur; LA, longueur du pétale antérieur; W, largeur du test; WP, largeur du pétale postérieur; WA, largeur du pétale antérieur; PS, profondeur du sinus frontal.
FIG. 6 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 6. — Diagramme montrant les variations du rapport des longueurs entre les pétales antérieurs et les pétales postérieurs (LA/LP) en fonction de la taille (L) chez B. gr. atlantica et B. gr. lyrifera. Même légende qu'en Fig. 4.
Figure 1. A and B in A new species of Peribrissus (Echinoidea, Spatangoida) from the middle Miocene of South Australia
Figure 1. A and B, general location maps; C, map of Murray River between Waikerie and Swan Reach, South Australia, showing locality of NMV PL3203, north of Blanchetown.
Figure 2 in A new species of Peribrissus (Echinoidea, Spatangoida) from the middle Miocene of South Australia
Figure 2. Peribrissus janiceae sp. nov. A–E, outline drawings of adapical, adoral, left lateral, anterior and posterior views of holotype NMV P316528, showing paths followed by marginal (mf) and semipetalous (spf) fascioles, and position of peristome (pse) and periproct (ppt).
FIG. 1 in Évolution de la diversité des Brissopsis (Echinoida, Spatangoida) en Méditerranée depuis la « crise messinienne »: application paléoécologique aux B. lyrifera intragypses de Sorbas (SE Espagne)
FIG. 1. — Localisation géographique du bassin de Sorbas.
FIGURE 1 in First record of the heart urchin Metalia persica (Mortensen, 1940) (Spatangoida: Brissidae) from the Chennai coast, India
FIGURE 1. Metalia persica from off Chennai: A. Aboral view before cleaning, B. Oral view before cleaning, C. Aboral view after cleaning, D. Slightly oblique oral view after cleaning.
Fig. 4 in Rediscovery of an internal organ in heart urchins (Echinoidea: Spatangoida): morphology and evolution of the intestinal caecum
Fig. 4 Homology of selected accessory structures associated with the digestive tract of heart urchins (Echinoidea: Spatangoida). a Dissected specimen of Brisaster latifrons (left) and schematic drawing of the general digestive tract morphology found within all species of the genera Brisaster and Tripylaster, as well as some species of the genus Abatus (right). b Dissected specimen of Heterobrissus niasicus (left) and
Fig. 3 in Rediscovery of an internal organ in heart urchins (Echinoidea: Spatangoida): morphology and evolution of the intestinal caecum
Fig. 3 Absence and presence of the intestinal caecum in selected paleopneustine heart urchins (Spatangoida: Paleopneustina). Aboral views of partially dissected specimens. Ambulacrum III facing upwards. a–c Representatives of three outgroup taxa, i.e., Prenasteridae (a),
Figure 11 in Systematic assessment of the Atelostomata (Spatangoida and Holasteroida; irregular echinoids) based on spine microstructure
Figure 11. View of the cylinder of spines of atelostomate echinoids of early–middle Albian age (Falkland Plateau; A, GZG.INV.94999; B, GZG.INV.95000). A, view on the inner side: pores are arranged in a horizontal pattern (right half of the image), but from approximately half of the image the pattern changes to helicoidal. B, view on the outer side: pores are arranged in a helicoidal pattern throughout. Scale bars: 20 μm.
Figure 10 in Systematic assessment of the Atelostomata (Spatangoida and Holasteroida; irregular echinoids) based on spine microstructure
Figure 10. View of the inner side of the cylinder of a spine of Corystus relictus (ZMUC-ECH-605): pores are arranged in a horizontal pattern (left half), but from approximately half of the image this changes to a helicoidal pattern. Scale bar: 20 μm.
Figure 9 in Systematic assessment of the Atelostomata (Spatangoida and Holasteroida; irregular echinoids) based on spine microstructure
Figure 9. Scatter plot showing the relationship between number of wedges and spine diameter, including convex hulls for each group; for a better overview only higher systematic levels are distinguished, where possible.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.