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549 results for “Cetacea”
Figure 2 in Morphology and phylogenetic relationships of a new eschrichtiid genus (Cetacea: Mysticeti) from the Early Pliocene of northern Italy
Figure 2. Eschrichtioides gastaldii gen. nov., comb. nov.: skull. A, dorsal view. B, right lateral view. C, ventral view. D, posterior view. Scale bar = 20 cm.
Figure 8. Aetiocetus weltoni, UCMP 122900, holotype left tympanic bulla. A in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 8. Aetiocetus weltoni, UCMP 122900, holotype left tympanic bulla. A, medial view; B, lateral view; C, ventral view; D, dorsal view; E, posterior view.
Figure 7. Aetiocetus weltoni, UCMP 122900 in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 7. Aetiocetus weltoni, UCMP 122900, sketch of right temporal wall showing configuration of cranial elements. al = alisphenoid, fo = foramen pseudovale, fr = frontal, of = orbital fissure, pal = palatine, par = parietal, pt = pterygoid, sq = squamosal.
Figure 5. Aetiocetus weltoni, UCMP 122900 in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 5. Aetiocetus weltoni, UCMP 122900, holotype; stereophotographs of portion of left palate showing location of lateral palatal foramina and sulci.
Figure 10. Aetiocetus weltoni. A in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 10. Aetiocetus weltoni. A, lateral view of reconstructed left dentary; B, medial view of reconstructed left dentary.
Figure 6. Aetiocetus weltoni, UCMP 122900 in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 6. Aetiocetus weltoni, UCMP 122900, holotype; stereophotographs of left portion of basicranium and posterior region of palate.
Figure 1. Aetiocetus weltoni, UCMP 122900, holotype skull. A in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 1. Aetiocetus weltoni, UCMP 122900, holotype skull. A, dorsal view; B, ventral view; C, left lateral view.
Figure 4. Aetiocetus weltoni, UCMP 122900, holotype skull. A in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 4. Aetiocetus weltoni, UCMP 122900, holotype skull. A, anterodorsal view; B, posterior view; C, lateral view of right anterior upper and lower dentition.
Figure 11 in Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Figure 11. Phylogenetic hypotheses of aetiocetid relationships. A, previous study based on Barnes et al. (1995); B, this study.
Fig. 1 in Cetotheriidae (Cetacea, Mysticeti) From The Collections Of The National Geological Museum, Bucharest (Romania)
Fig. 1. Location of the studied area in Romania (left) and the geological structures and location of the fossiliferous localities (right) in Gorj County (modified after Codarcea et al., 1968): 1 — Igneous rocks; 2 — Sarmatian s. l.; 3 — Maeotian; 4 — Upper Besarabian–Maeotian; 5 — Holocene; 6 — Pleistocene; 7 — Volhynian–Lower richnessBessarabian(Bercia; 8 —et al., fossiliferous 1968). Theselocality. deposits are situated in the Novaci depression and continue to the east and to the west, as well as south of the Ciocadia–Săcel anticline (Bercia et al., 1968). The paleontological content is also represented by invertebrate species such as: Unio cf. subrecurvus Teisseyre 1907, Radix cf. velutina Deshayes 1838, and Congeria navicula Andrusov 1897 (Popescu, 1955; Bercia et al., 1968). The last sedimentary sequence, situated east of the Cerna River, on the northern rim of the Dacian Basin is composed of detritic deposits containing rare Mactra Linnaeus 1767 remains, characteristic of the Bessarabian and Khersonian, while eastwards, towards Râmnicu Vâlcea these detritic deposits overlay the Lower Bessarabian formations with C. pesanseris, and above these, the Maeotian deposits, predominantly detritic, composed of sands and sandy marls with gravel interlays follow (Bercia et al., 1968).
Fig. 3 in Cetotheriidae (Cetacea, Mysticeti) From The Collections Of The National Geological Museum, Bucharest (Romania)
Fig. 3. Cetotheriidae lumbar vertebrae: 10.068 in: A — cranial view; B — caudal view; C — lateral view; D — dorsal view; E — ventral view; 10.064 in: F — cranial view; G — caudal view; H — lateral view; I — dorsal view; J — ventral view; 10.066 in: K — cranial view; L — caudal view; M — lateral view; N — dorsal view; O — ventral view; 10.069 in: P — cranial view; Q — caudal view; R — lateral view; S — dorsal view; T — ventral view; 21.115 in: U — cranial view; V — caudal view; W — lateral view; X — dorsal view; Y — ventral view. Scale bar 10 mm.
Fig. 2 in Cetotheriidae (Cetacea, Mysticeti) From The Collections Of The National Geological Museum, Bucharest (Romania)
Fig. 2. Cetotheriidae caudal vertebrae: 10.096 in: A — cranial view; B — caudal view; C — lateral view. D — dorsal view; E — ventral view; 10.067 in: F — cranial view; G — caudal view; H — lateral view; I — dorsal view; J — ventral view; 10.143 in: K — cranial view; L — caudal view; M — lateral view; N — dorsal view; O — ventral view; 21.113 in: P — cranial view; Q — caudal view; R — lateral view; S — dorsal view; T — ventral view; 21.114 in: U — cranial view; V — caudal view; W — lateral view; X — dorsal view; Y — ventral view; 21.116 in: Z — cranial view; A` — caudal view; B` — lateral view; C` — dorsal view; D` — ventral view; 21.117 in: E` — cranial view; F` — caudal view; G` — lateral view; H` — dorsal view; I` — ventral view; 21.118 in: J` — cranial view; K` — caudal view. L` — lateral view; M` — dorsal view; N` — ventral view; 10.097 in: O` — cranial view; P` — caudal view; Q` — lateral view; R` — Dorsal view; S` — ventral view. Scale bar 10 mm.
Fig. 4 in Cetotheriidae (Cetacea, Mysticeti) From The Collections Of The National Geological Museum, Bucharest (Romania)
Fig. 4. Mithridatocetus sp. humerus 21.112 in: A — anterior view; B — posterior view; C — ventral view; D — dorsal view. Scale bar 10 mm.
Cetacean sightings, n T.t.ponticus 59 45 22 4 2 3 1 2 0 0 4 1 June July August September Fig. 4. Sightings per month for each species. in Vantage point surveys of cetaceans (Mammalia, Cetacea) and their interactions with marine birds
Cetacean sightings, n T.t.ponticus 59 45 22 4 2 3 1 2 0 0 4 1 June July August September Fig. 4. Sightings per month for each species.
Fig. 1 in Vantage point surveys of cetaceans (Mammalia, Cetacea) and their interactions with marine birds
Fig. 1. Cetacean sightings at Cape Emine (white dot) between June-September, 2021 (blue – T. t. ponticus, green – P. p. relicta, red – D. d. ponticus, yellow - vantage - point).
Fig. 2. Feeding activity during the 2021 in Vantage point surveys of cetaceans (Mammalia, Cetacea) and their interactions with marine birds
Fig. 2. Feeding activity during the 2021 observations at Cape Emine - white dot; blue – T. t. ponticus, green – P. p. relicta, red – D. d. ponticus, yellow - vantage - point.
Data from: Evolution of cranial telescoping in echolocating whales (Cetacea: Odontoceti)
Odontocete (echolocating whale) skulls exhibit extreme posterior displacement and overlapping of facial bones, here referred to as retrograde cranial telescoping. To examine retrograde cranial telescoping across 40 million years of whale evolution, we collected 3D scans of whale skulls spanning odontocete evolution. We used a sliding semilandmark morphometric approach with Procrustes superimposition and PCA to capture and describe the morphological variation present in the facial region, followed by Ancestral Character State Reconstruction (ACSR) and evolutionary model fitting on significant components to determine how retrograde cranial telescoping evolved. The first PC score explains the majority of variation associated with telescoping and reflects the posterior migration of the external nares and premaxilla alongside expansion of the maxilla and frontal. The earliest diverging fossil odontocetes were found to exhibit a lesser degree of cranial telescoping than later diverging but contemporary whale taxa. Major shifts in PC scores and centroid size are identified at the base of Odontoceti, and early burst and punctuated equilibrium models best fit the evolution of retrograde telescoping. This indicates that the Oligocene was a period of unusually high diversity and evolution in whale skull morphology, with little subsequent evolution in telescoping.
Data from: Echericetus novellus n. gen. n. sp. (Cetacea: Mysticeti: Eomysticetidae), an Oligocene baleen whale from Baja California Sur, Mexico
<p><span>Among the several evolutionary lineages of the baleen whales (Mysticeti), the eomysticetids are an ancient successful family that retain possibly non-functional teeth and functional baleen, a transitional stage between toothed and baleen-assisted filter-feeding mysticetes. However, the patchy fossil record leaves gaps in eomysticetids palaeobiology interpretations but their diversity and widespread geographical distribution can be a relevant proxy to understanding the evolution of crown Mysticeti. Here, we describe a new baleen whale, <em>Echericetus novellus</em> n. gen. n. sp., from the Oligocene of Mexico (slightly older than 27.95 million years ago). This new taxon has morphological features that show its affinity to Eomysticetidae, such as the intertemporal region longer than wide, elongate and oval temporal fossa, and a well-developed and lobate coronoid process of the mandible. Similarly, our cladistic analyses confirm the inclusion of <em>Echericetus</em> in the Eomysticetidae. <em>Echericetus</em> reinforces our notion of the eomysticetid diversity and disparity. Geographically, the existence of <em>Echericetus</em> from Mexico also indicates that eomysticetids inhabited subtropical regions in the Northern Hemisphere. Lastly, our discovery of a new eomysticetid from the Oligocene of Mexico provides new insights into the distribution patterns and habitat use of Eomysticetidae, essential to further explain the demise of this transitional lineage between toothed and baleen-bearing whales.</span></p>
Fig. 5 in Abundance And Summer Distribution Of A Local Stock Of Black Sea Bottlenose Dolphins, Tursiops Truncatus (Cetacea, Delphinidae), In Coastal Waters Near Sudak (Ukraine, Crimea)
Fig. 5. Discovery curve as cumulative number of identified dolphins vs. duration of study.
Fig. 3 in Abundance And Summer Distribution Of A Local Stock Of Black Sea Bottlenose Dolphins, Tursiops Truncatus (Cetacea, Delphinidae), In Coastal Waters Near Sudak (Ukraine, Crimea)
Fig. 3. Categories of dorsal fins for photo-identification(a– d, marked; e, f, unmarked).
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.