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163 results for “mysticete”
FIGURE 14 in A new group of late Oligocene mysticetes from México
FIGURE 14. Tlaxcallicetus sp. (MU EcSj5/18/95), cranium, posterior view.
FIGURE 3 in A new group of late Oligocene mysticetes from México
FIGURE 3. Tlaxcallicetus guaycurae (MU EcSj5/06/31), cranium, dorsal view.
FIGURE 7 in A new group of late Oligocene mysticetes from México
FIGURE 7. Tlaxcallicetus guaycurae (MU EcSj5/06/31), cranium, lateral view.
FIGURE 13 in A new group of late Oligocene mysticetes from México
FIGURE 13. Tlaxcallicetus sp. (MU EcSj5/18/95), cranium, frontal view.
FIGURE 12 in A new group of late Oligocene mysticetes from México
FIGURE 12. Tlaxcallicetus sp. (MU EcSj5/18/95), cranium, ventral view.
FIGURE 11 in A new group of late Oligocene mysticetes from México
FIGURE 11. Tlaxcallicetus sp. (MU EcSj5/18/95), cranium, dorsal view.
FIGURE 5 in A new group of late Oligocene mysticetes from México
FIGURE 5. Tlaxcallicetus guaycurae (MU EcSj5/06/31), cranium, frontal view.
FIGURE 6 in A new group of late Oligocene mysticetes from México
FIGURE 6. Tlaxcallicetus guaycurae (MU EcSj5/06/31), cranium, posterior view.
FIGURE 4 in A new group of late Oligocene mysticetes from México
FIGURE 4. Tlaxcallicetus guaycurae (MU EcSj5/06/31), cranium, ventral view.
Table 1 in Whales from space: Four mysticete species described using new VHR satellite imagery
<p><i>Table 1.</i> Summary of morphological characteristics per surveyed species.</p><table><tbody><tr><th></th><th>Number</th><th></th><th>Number</th><th></th><th></th><th></th><th></th></tr></tbody><tbody><tr><th></th><td>of</td><td>Number of</td><td>of</td><td>Total</td><td>Proportion</td><td></td><td></td></tr><tr><th>Species</th><td>“definite” whales</td><td>“probable” whales</td><td>“possible” whales</td><td>number of whales</td><td>of definite whale (%)</td><td>Average body measurements (m)b</td><td>Distinctive characteristics</td></tr><tr><th>Fin whale</th><td>26</td><td>3</td><td>5</td><td>34</td><td>76.47</td><td>A: 13.49 (<i>n</i> = 9, SD = 2.92)</td><td>Streamlined</td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td></td><td>body</td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>B: 2.56 (<i>n</i> = 9, SD = 0.47)</td><td></td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>C: 1.94 (<i>n</i> = 6, SD = 0.23)</td><td></td></tr><tr><th>Southern right</th><td>23</td><td>12</td><td>23 (1)a</td><td>59</td><td>38.98</td><td>D: 3.68 (<i>n</i> = 1, SD = NA) A: 10.47 (<i>n</i> = 6, SD = 2.69)</td><td>White callosities</td></tr><tr><th>whale</th><td></td><td></td><td></td><td></td><td></td><td>B: 3.08 (<i>n</i> = 6, SD = 0.39)</td><td>on the head</td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>C: NA (<i>n</i> = 0, SD = NA)</td><td></td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>D: 4.45 (<i>n</i> = 1, SD = NA)</td><td></td></tr><tr><th>Humpback</th><td>20</td><td>11</td><td>25</td><td>56</td><td>35.71</td><td>A: 10.62 (<i>n</i> = 5, SD = 1.36)</td><td>Long flippers</td></tr><tr><th>whale</th><td></td><td></td><td></td><td></td><td></td><td>B: 2.94 (<i>n</i> = 4, SD = 0.43)</td><td></td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>C: 2.39 (<i>n</i> = 4, SD = 0.53)</td><td></td></tr><tr><th>Gray whale</th><td>27 (2)a</td><td>18 (4)a</td><td>17 (2)a</td><td>62</td><td>43.55</td><td>D: NA (<i>n</i> = 0, SD = NA) A: 12.58 (<i>n</i> = 10, SD = 0.95)</td><td>Pale, whitish</td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>B: 2.90 (<i>n</i> = 9, SD = 0.44)</td><td>body</td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>C: 1.90 (<i>n</i> = 3, SD = 0.27)</td><td></td></tr><tr><th></th><td></td><td></td><td></td><td></td><td></td><td>D: 3.06 (<i>n</i> = 8, SD = 0.26)</td><td></td></tr></tbody></table><p><sup>a</sup> Number of calves.</p><p><sup>b</sup> A: body length, B: body width, C: flipper length, D: fluke width.</p>
Table 2 in Whales from space: Four mysticete species described using new VHR satellite imagery
<p><i>Table 2.</i> Catalog of the different surface water disturbances and near surface disturbances associated with the four candidate whale species. All images are pan-sharpened. In the images where more than one sign are present, a red circle highlight the sign being referred to.</p><table><tbody><tr><th>Sign</th><th>Description</th><th>Fin whale</th><th>Southern right whale</th><th>Humpback whale</th><th>Gray whale</th></tr></tbody><tbody><tr><th>After-breach</th><td>Large white area left after a whale breached, or lobtailed, flipper-slapped</td><td>Not observed on the studied satellite images</td><td>Not observed on the studied satellite images</td><td></td><td>Not observed on the studied satellite images</td></tr><tr><th>Blow</th><td>Vaporous whitish patch next to a whale, similar looking to fog</td><td>Not observed on the studied satellite images</td><td></td><td></td><td></td></tr><tr><th>Contour</th><td>White line separating the part of the whale body that is above and below the sea surface (<i>e.g.</i>, when a whale is rolling its back or surfacing to breathe)</td><td></td><td></td><td></td><td></td></tr></tbody></table>
Figure 2 in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 2. Aetiocetus weltoni, reconstructed skull in dorsal view showing anatomical features.
Figure 9. Aetiocetus weltoni, UCMP 122900, holotype left dentary. A in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 9. Aetiocetus weltoni, UCMP 122900, holotype left dentary. A, lateral view; B, medial view.
Behavioural context of call production in humpback whale calves: Identification of potential begging calls in a Mysticete species
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Data from: Capture and release of Minke whales offers new research opportunities, including measurements of mysticete hearing
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Data from: The earliest baleen whale of the mediterranean: Large-scale implications of an early miocene thalassotherian mysticete from Piedmont, Italy
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Data from: Palaeobiogeography of the north pacific toothed mysticetes (Cetacea, Aetiocetidae): a key to Oligocene cetacean distributional patterns
<p>Biogeographical distributional patterns of cetaceans reflect dispersal events and colonization of the oceans from their ancestral area in the ancient Sea of Tethys ~53 Ma. Likewise, they shows several vicariance events throughout the evolutionary history of this group. However, our understanding of how these processes took place and what biogeographical scenarios occurred among the different groups of cetaceans through time, is limited. Consequently, this work focuses on explaining the distributional patterns of the well-known North Pacific toothed mysticetes, Aetiocetidae, through the power of retrodiction offered by track analysis (panbiogeography) and cladistic biogeography, using the approach of evolutionary biogeography. Our results show that the distributional patterns of Aetiocetidae explain their endemism in the North Pacific, as well as indicate that their hypothetical ancestor probably colonized the Pacific from the Atlantic Ocean by a dispersal event (founder effect) via the Central American Seaway. Furthermore, their biogeographic history shows the adaptive radiation (cladogenesis) of Aetiocetidae as result of peripatric speciation followed by sympatric speciation within a heterogeneous environment. Finally, the biogeographic framework of Aetiocetidae further supports the relevant role that the Pacific Ocean has played in the evolution of Oligocene cetaceans as a geographic area that promoted endemism, dispersal, and colonization. While at more local scales, environmental conditions further promoted increased diversity and disparity amongst Mysticeti.</p>
Figure 5 in Neurovascular evidence for a co-occurrence of teeth and baleen in an Oligocene mysticete and the transition to filter-feeding in baleen whales
Figure 5. Digital segmentations (top) and graphical reconstructions of rostral canals in select cetaceans (bottom). A, extant toothed odontocete Tursiops truncatus (SDSNH 21212). B, extinct toothed mysticete Aetiocetus weltoni (UCMP 122900). C, extant toothless mysticete Eschrichtius robustus (modified from: Ekdale et al., 2015).
Figure 4 in Neurovascular evidence for a co-occurrence of teeth and baleen in an Oligocene mysticete and the transition to filter-feeding in baleen whales
Figure 4. CT-scan data of Aetiocetus weltoni (UCMP 122900). Slice A–A' taken oblique to the horizontal plane through the skull as indicated on the surface medial in lateral view to image course of infraorbital canal. Slices B–B', C–C' and D–D' taken along the transverse plane (original scan axis) at different positions along the rostrum as indicated on the surface model in dorsal view.
Figure 1 in Neurovascular evidence for a co-occurrence of teeth and baleen in an Oligocene mysticete and the transition to filter-feeding in baleen whales
Figure 1. Hypothesis of baleen evolution. Relationships based on published phylogenetic analyses (Uhen, 2013; Fordyce & Marx, 2018; Peredo et al., 2018). Thick bars represent stratigraphic ranges downloaded from the Paleobiology Database (paleobiodb.org) on 14 February 2020, using the taxonomic name search form for each terminal taxon named on the cladogram. Red branches indicate presence of lateral palatal foramina.
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Allen Brain Atlas
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