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39 results for “Myliobatis”
Fig. 1 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 1. Map of Mali indicating three localities discovered in the 1999 CNRST−SUNY expedition. Boundary between the Illummeden and Tauodeni basins in northern Mali is outlined in light gray. Mali−8 marks localities yielding fossils of Myliobatidae. Dark Gray marks exposed basement rocks in the Adrar des Iforas Mountains; white marks Proterozoic structure that connected the two light gray basin periodically during the Cretaceous– Paleogene.
Fig. 6 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 6. Phylogenetic relationships and stratigraphic distribution of Myliobatidae. Epochs are not drawn to scale.
Fig. 3. The fossil stingray Myliobatis wurnoensis White, 1934 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 3. The fossil stingray Myliobatis wurnoensis White, 1934 from Maastrichtian of Mali. A, B. Partial upper dental plates. A. CNRST−SUNY−5 in posterior (A1), occlusal (A2), and basal (A3) views. B. CNRST−SUNY−37 in posterior (B1), occlusal (B2), and basal (B3) views. C. Partial lower dental plate, CNRST− SUNY−3 in occlusal (C1) and basal (C2) views. Anterior is to top of page for all images except A1 and B1, which are in posterior view. Scale bars 10 mm.
Fig. 2 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 2. Composite stratigraphic sections of localities Mali−7, −8, and −10. Relative stratigraphic positions of index fossils and inferred depositional settings supporting age of Myliobatis wurnoensis (Mali−8). Index fossils from Mali−7, −8, and −10. Lower gray line is the inferred KT boundary in this section and the upper gray line is the inferred position of the Paleocene–Eocene boundary in this section. Abbreviations: CG, conglomerate; LS, limestone; MS, shale; SS, sandstone.
Fig. 5 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 5. Summary of unambiguous character transformations across Myliobatidae (node−B) that were optimized on all most parsimonious trees. Black boxes have a CI = 1.0 and white boxes have a lower CI value. Bold face denotes extinct taxa.
Fig. 8 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 8. Comparative extinct taxa of Myliobatiformes; known ages mapped onto Fig. 6. A. Hypolophites myliobatoides Stromer, 1910, NHM P18781; A1, occlusal view, anterior to top; A2, lateral view, anterior to left; A3, root view, anterior to top. B. Brachyrhizodus wichitaensis Romer, 1942, NHM P89095; B1, occlusal view; anterior undetermined; B2, root view; anterior undetermined. C. Apocopodon sericius, NHM P24670, C1, occlusal view, anterior to top; C2, lateral view, anterior to left; C3, root view, anterior to top. D. Igdabatis sigmodon, TMM 45892−1; D1, occlusal view, anterior to top; D2, posterior view; D3, root view, anterior to bottom; D4, lateral view, anterior to left. E. Myliobatis striatus, NHM P.66859; E1, occlusal view, anterior to top; E2, root view, anterior to top; E3, posterior view; E4, lateral view, anterior to left. F. Aetobatus arcuatus, SMNH 12656−3; F1, occlusal view, anterior to top; F2, root view, anterior to top; F3, anterior view; F4, lateral view, anterior to left. Scale bars 10 mm.
Fig. 4 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 4. Strict consensus of eight most parsimonious trees (MPT). A. Tree from full analysis with Myliobatidae condensed as single terminal taxon in gray box labeled "B". B. Expanded Myliobatidae portion of tree, which is identical on all eight MPTs. TL = 141, CI = 0.6312, HI = 0.3688, RI = 0.8844, RC = 0.5583. Bold face in B denotes extinct taxa.
Fig. 7 in First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters
Fig. 7. Comparative extant taxa of Myliobatidae. A, B, D. Articulated jaws and tooth rows. C. Disarticulated jaws and articulated tooth rows. E–G. Articulated tooth rows. A. Raja sp., AMNH 92321b, in labial view. B. Dasyatis sp., FMNH 15625, in labial view. C. Rhinoptera quadriloba (LeSueur, 1817), FMNH 82986, in occlusal view. D. Myliobatis californica Gill, 1865, MCZ 424, in lingual view. E. Mobula hypostoma (Bancroft, 1831), AMNH 44124, in occlusal view, photograph (E1), line drawing (E2); F. Mobula rochebruni (Vaillant, 1879), FMNH 38450, in occlusal view, photograph (F1), line drawing (F2). G. Manta hamiltoni (Walbaum, 1792), FMNH 41385, in occlusal view, photograph (G1), line drawing (G2). H. Aetobatus narinari (Euphrasen, 1790), FMNH 10985, in labial view.
Santa Barbara Coastal site, station Arroyo Hondo Reef, Santa Barbara Channel, study of animal density of Myliobatis californica in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal density of Myliobatis californica measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Arroyo Quemado Reef, Santa Barbara Channel, study of animal density of Myliobatis californica in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal density of Myliobatis californica measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Carpinteria Reef, Santa Barbara Channel, study of animal density of Myliobatis californica in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal density of Myliobatis californica measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Naples Reef, Santa Barbara Channel, study of animal density of Myliobatis californica in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal density of Myliobatis californica measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
FIGURE 6 in Dendromonocotyle bradsmithi n. sp. (Monogenea: Monocotylidae) from the skin of Myliobatis australis (Elasmobranchii: Myliobatidae) off Adelaide and Perth, Australia: description of adult and larva
FIGURE 6. Diagram of distribution of ciliated epidermal cells in anterior zone (az), median zone (mz) and posterior zone (pz) and sensilla on larva of Dendromonocotyle bradsmithi n. sp. as revealed by silver staining. A. Dorsal view. B. Ventral view; note: complement of ciliated cells in posterior region may not be complete (see Discussion).
FIGURE 5. Dendromonocotyle bradsmithi n in Dendromonocotyle bradsmithi n. sp. (Monogenea: Monocotylidae) from the skin of Myliobatis australis (Elasmobranchii: Myliobatidae) off Adelaide and Perth, Australia: description of adult and larva
FIGURE 5. Dendromonocotyle bradsmithi n. sp. oncomiracidium. A. Dark field photomicrograph of whole larva showing refringent droplets associated with ciliated epidermal cells. B. Bright field photomicrograph of anterior half of larva showing strands of pigment extending throughout body. C. Phase contrast photomicrograph of posterior end showing 14 hooklets each with domus and showing posterior gland cells (arrowheads) containing granular secretion. D. Dorsal view of silver stained specimen showing distribution of dorsomedian sensilla (arrowhead). E. Ventral view of silver stained specimen showing distribution of anteroventral ciliated epidermal cells. Scale bars: A = 50 m; B–E = 20 m.
FIGURE 4. Dendromonocotyle bradsmithi n in Dendromonocotyle bradsmithi n. sp. (Monogenea: Monocotylidae) from the skin of Myliobatis australis (Elasmobranchii: Myliobatidae) off Adelaide and Perth, Australia: description of adult and larva
FIGURE 4. Dendromonocotyle bradsmithi n. sp. oncomiracidium. A. Larva. B. Hooklet. Note for clarity the body pigment in the larva (see Fig. 5B) has not been drawn. Abbreviations: agc, anteromedian gland cell containing granular secretion; c, cilium; cl, crystalline lens of eyespot; d, domus; e, eyespot; ebl, excretory bladder; f, flame bulb; h, hooklet; lnc, lateral gland cell containing needlelike secretion; m, mouth; nm, nonmotile cilium; p, pharynx; pgc, posterior gland cell containing granular secretion. Scale bars: A = 50µm; B = 10µm.
FIGURE 2. Dendromonocotyle bradsmithi n in Dendromonocotyle bradsmithi n. sp. (Monogenea: Monocotylidae) from the skin of Myliobatis australis (Elasmobranchii: Myliobatidae) off Adelaide and Perth, Australia: description of adult and larva
FIGURE 2. Dendromonocotyle bradsmithi n. sp. A. Haptoral terminal papillar sclerite. B. Other haptoral papillar sclerite. C. Tripartite sclerite. D. Distal end of male copulatory organ showing accessory filament (af) and terminal crisscrossed sperm duct (sd). E. Spermatophore with proximal (p) bulb and distal (d) tapered region. F. Egg with appendage (a). Scale bars: A–C = 20µm; D = 50µm; E, F = 100µm.
FIGURE 3 in Dendromonocotyle bradsmithi n. sp. (Monogenea: Monocotylidae) from the skin of Myliobatis australis (Elasmobranchii: Myliobatidae) off Adelaide and Perth, Australia: description of adult and larva
FIGURE 3. Male copulatory organ (MCO) development of Dendromonocotyle bradsmithi n. sp. A. Juvenile specimen (900µm long), MCO (400µm long) looped (arrowhead) twice. B. Juvenile specimen (1180µm long), MCO (460µm long) looped once. C. Adult worm (2030µm long), MCO (1015µm long) not looped; box delineates distal end of organ enlarged in Fig. 3D. D. Enlargement of distal end of adult MCO showing terminal crisscrossed sperm duct and accessory filament. Scalebars: 50µm.
FIGURE 17 in Redescription of the eagle rays Myliobatis hamlyni Ogilby, 1911 and M. tobijei Bleeker, 1854 (Myliobatiformes: Myliobatidae) from the East Indo-West Pacific
FIGURE 17. Outline of cranial fontanelle (in dorsal view) of: A) Myliobatis hamlyni and B) Myliobatis tobijei.
FIGURE 8 in Redescription of the eagle rays Myliobatis hamlyni Ogilby, 1911 and M. tobijei Bleeker, 1854 (Myliobatiformes: Myliobatidae) from the East Indo-West Pacific
FIGURE 8. Distribution of Myliobatis hamlyni (black star—holotype; black circle—other records); and M. tobijei (crossed square—holotype; black square—other records) in the East Indian and West Pacific.
FIGURE 7. A in Redescription of the eagle rays Myliobatis hamlyni Ogilby, 1911 and M. tobijei Bleeker, 1854 (Myliobatiformes: Myliobatidae) from the East Indo-West Pacific
FIGURE 7. A) Upper and B) lower tooth plates of Myliobatis hamlyni CSIRO H 5889-36 (adult male 697 mm DW).
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