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Figure 19 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 19. – Finlet spines of several fossil Polypteridae. A: Polypterus dageti (right lateral view); B: Bartschia tubularis (posterior view); C: Latinopollia suarezi (anterior view); D: Dagetella sudamericana (anterior view); E: Inbecetemia torta; F: Inbecetemia tortissima. The spines of A-D are symmetrical dorsal spines and look like the extant ones (compare with Fig. 3, 4, 11 and 13), whereas the spines of E and F are dissymetrical and correspond probably to pectoral or pelvic spines (see Discussion). Scale bars: A, B, E, F = 0.5 mm; C, D: = 1 mm. (A, B, E, F: from Gayet and Meunier, 1996; C, D: from Gayet and Meunier, 1998).
Figure 2. – A-B in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 2. – A-B: Polypterus senegalus and Erpetoichthys calabaricus, respectively; body scales in the dorsal region of the two first finlets. C: P. senegalus; outer face of the first left scale just behind the articulation of the spine. D: P. endlicheri; inner face of the last right predorsal scale just before the articulation of the spine. E: E. calabaricus; the articulation of the finlet spine with its pterygiophore. The arrows indicate the head direction of the fish. sp1, sp2: first and second spine articulation. Scale bars: A, B, C, D = 1 mm; E = 0.5 mm.
Figure 3. – A in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 3. – A: Polypterus ansorgei; the anterior face of the spine shows the basal articular head (asterisk), and the ganoine patches on the shaft, and the two distal tips (arrows). B-E: P. senegalus; anterior view of the articular head of the 1st (B), 5th (C), 8th (D) and 10th (E) finlet spines; the ganoine layer is lacking where the web membrane fits on the spine. Scale bar = 1 mm.
Figure 11. – Polypterus senegalus. A in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 11. – Polypterus senegalus. A: The posterior face of 6th finlet spine from a female on the left and a male on the right, and showing the basal foramen on the articular head, the median groove and a lepidotrichium on the shaft. The symmetrical distal points of the spines correspond to apical odontodes. B-C: The anterior (on the left) and right (on the right) lateral views of the articular head of the spine respectively of a female and a male. Scale bars = 1 mm.
Figure 8 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 8. – Polypterus senegalus. Posterior view of the ten finlet spines (S1-S10) and the first lepidotrichium of the posterior part of the dorsal fin. Scale bar = 1 mm.
Figure 18 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 18. – Ground sections of the 1st spine at the level of the foramen (except for E. calabaricus), showing the general histological organization of the spines, specially the ganoine patches and the vascular canals (in black). The foramen merges with the medular canal in the centre of the spine. The posterior and anterior sides of the spine are respectively lower and upper. Scale bars = 1 mm.
Figure 1 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 1. – Polypterus sp. Schematic drawings. A: Left side of fish showing the position and the two parts of the dorsal fin: the anterior one with seven finlets (1 to 7) and the posterior one fused with the caudal fin. B: Detail of the anterior part of the dorsal fin; behind the 7th finlet the striped area corresponds to the posterior part of the dorsal fin. C: Detail of a finlet with the anterior spine and three lepidotrichial branches that sustain the web.
Figure 4. – A-B in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 4. – A-B: Polypterus bichir katangae; A: The anterior face of the spine is covered by an irregular ganoine layer, and shows the basal articular head (AH) and the shaft (SH); B: The posterior face of the spine shows, the median groove and the basal foramen on the shaft; the two arrow-heads indicate the two lateral pads. C-F: P. senegalus; detail of the anterior (C), the posterior (D), the left lateral (E), and the basal face (F) of the articular head, respectively, to show the various significant processes; the arrowhead points to the median groove (F). Scale bars: A, B = 1 mm; C-F = 0.5 mm.
Figure 10 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 10. – Polypterus senegalus. Lateral view of the ten finlet spines (sp1-sp10) and the first lepidotrichium (lep) of the posterior part of the dorsal fin. The anterior and posterior sides are respectively on the left and on the right. Scale bar = 1 mm.
Figure 16 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 16. – Posterior view of the articular heads. The geometrical schematic figures (triangle, square, trapezium, circle) circumscribe the various processes improving the diagnostic characters of the articular head. Scale bar = 0.5 mm.
Figure 13 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 13. – Details of the anterior side of the articular head of the 7th finlet spine, except Polypterus bichir bichir 1st, P. b. lapradei 16th, P. polli 3th and P. senegalus 6th. The arrows point to the ganoine. Scale bars = 1 mm.
Figure 9 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 9. – Polypterus senegalus. Basal view of the articular head of the ten finlet spines (S1-S10) of the anterior dorsal fin. Scale bar = 1 mm.
Figure 12. – Erpetoichthys calabaricus. A in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 12. – Erpetoichthys calabaricus. A: The posterior face of 6th finlet spine. B: Basal view of the articular head of the same finlet spine showing the glenoid cavity and the processes. Scale bars = 0.5 mm.
Figure 6 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 6. – Polypterus senegalus (male, 260 mm TL). A: Posterior side of the shaft showing, in the median groove, three branches of the lepidotrichium: the primary branch and two secondary branches going out of the median grove. B-C: Respectively lateral and sagittal axial sections of a finlet spine showing the vascular network (B: in black) and the insertion (in C) of the branches of the lepidotrichium (modified from Meunier, 1980). Scale bars = 1 mm.
Figure 7 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 7. – Polypterus senegalus (male, 260 mm TL). A-I: Nine successive transversal sections (from the base to the tip) of a finlet spine: section F crosses the glenoid cavity and is associated to a lateral scale; section B crosses the foramen; the seven other sections (C-I) are regularly dispatched along the shaft, the two last ones crossing four branches of the lepidotrichium: the primary branch at the bottom of the median groove and three secondary branches. The asterisks point to the medullar canal. Scale bar = 0.5 mm.
Figure 15 in Comparative morphology of the finlet spines of the extant Polypteridae (Osteichthyes; Cladistia). Systematic interest
Figure 15. – Posterior side of the whole finlet spine showing the peculiarities of the articular head and of the median groove of the shaft. 7th spine, except Erpetoichthys calabaricus and Polypterus bichir bichir 1st, P. b. lapradei 16th, P. polli 3th and P. senegalus 6th. Scale bars = 0.5 mm for Erpetoichthys; 1 mm for Polypterus species.
Extant coccolithophore cell size measurements
<p><span>This is a dataset of extant coccolithophore coccosphere and cell size measurements taken using light microscopy (LM) and measured using the image analysis progam Fiji. Samples come from the Atlantic Meridional Transect (AMT) 18 cruise (2008), cruise D366 around the NW European shelf (2011), and surface water samples taken in the Maldives during International Ocean Discovery Program (IODP) Expedition 359 (2015). Further information on the data collection and content of the dataset can be found in the dataset description word file.<br><br></span></p> <p><span>This dataset is currently related to two manuscripts in preparation: </span></p> <p><span><span>1.<span> </span></span></span><span>Rosie M. Sheward, Alex J. Poulton, Jeremy R. Young, Joost de Vries, Fanny M. Monteiro, Jens O. Herrle. “Cellular morphological trait dataset for extant coccolithophores from the Atlantic Ocean” to be submitted to <em>Scientific Data</em>.</span></p> <p><span><span>2.<span> </span></span></span><span>Joost de Vries, Rosie M. Sheward, Alex J. Poulton, Jeremy Young, Fanny Monteiro, Roberta Johnson, Kyoko Hagino, Patricia Zivera and Levi Wolf. “Dataset of extant coccolithophore size, carbon content and global distribution” to be submitted to <em>Scientific Data</em>.</span></p> <p> </p> <p><span>Correspondence to Jeremy Young, jeremy.young@ucl.ac.uk</span></p> <p><span> </span></p>
FIGURE 12. Rhabdopleura emancipata n in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 12. Rhabdopleura emancipata n. sp., A, B, D, E, paratype NIWA 161566; C, paratype 161211: A, B, distal part of a ringed tube, the bracketed section enlarged in B. C, transmitted-light view of a principal tube (stem) with openings of four ringed tubes all around; tentacles of one young zooid partly emergent; note how black stolon changes position within principal tube; cdc = cone of diaphragm complex. D, close-up of exterior surface of a principal tube showing parallel fusellar annuli marked by thin sutures. E, sclerotized tube, with terminal aperture at left, branching off a principal stolon. Scale bars: A, 200 μm; B, 100 μm; C, 400 μm; D, 100 μm; E, 1 mm.
FIGURE 11. Rhabdopleura emancipata n in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 11. Rhabdopleura emancipata n. sp., A, B, holotype NIWA 13590; C, E, paratype 161211; D, paratype NIWA162566: A, B, close-up and whole colony (inset); principal tubes are identifiable in A by the dark-brown stolon that passes through them; abundant ringed tubes diverge almost at right angles from principal tubes. C, transmitted-light view of a principal tube (pt) from which two ringed tubes (rt) diverge and, between them, a branch of the principal tube with a bifurcation of the black stolon (bs); other abbreviations: cdc, cone of diaphragm complex; cs, contractile stalk (gymnocaulus) of zooid; fc, fusellar collar; s, septum. D, SEM of a principal tube (pt) (stem), with its aperture at left, and five ringed tubes in various stages of development. E, transmitted-light view of a principal tube (pt) (stem) and its black stolon (bs) in which are three young zooids (z), the middle one of which shows, from below, the opening of a potential ringed tube (ort). Scale bars: A, 3 mm; B, 3 cm; C‒E, 0.5 mm.
FIGURE 10. Rhabdopleura decipula n in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 10. Rhabdopleura decipula n. sp., A, C, D, holotype 162592; B, E, paratype 3 NIWA 162591; F, paratype 4 NIWA 158517; G‒K, paratype 2 NIWA 161213. A, broken-tipped erect tube. B, distal end of young erect tube. C, D, subdistal and middle parts of same fully formed erect tube. E, F, parts of creeping tubes with some point-to-point suture zigzags highlighted. G, a prosicula (ps) and metasicula (ms); H‒K, reflected-light (H, I) and SEM (J, K) images of new colonies, with numbers indicating the inferred budding sequence (subsequent development seems to vary) of creeping tubes; the metasicula produces one or two metasiculae while one side of the prosicula is internally partitioned off to produce both a backwards-directed tube and an opposing creeping tube. Black stolons occur in H and a zooid in I. Scale bars: A, E‒H, 200 μm; B, 100 μm; C, D, K, 50 μm; I, J, 400 μm.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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.