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10 results for “Physeteroidea”
Fig. 5 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 5. Schematic comparisons of the periotic of MLP 76-IX-5-1, "Preaulophyseter gualichensis" Caviglia and Jorge, 1980 (A) with "Aulophyseter" rionegrensis (B), Acrophyseter deinodon (C, modified from Lambert et al. 2016), Zygophyseter varolai (D, modified from Bianucci and Landini 2006), Aulophyseter morricei (E, modified from Kellogg 1927), Orycterocetus crocodilinus (F, modified from Kellogg 1965), and Physeter macrocephalus (G, modified from Kasuya 1973). In dorsal (A1–G1), ventral (A2–G2), medial (A3–G3), and lateral (A4–C4, E4–G4) views. Black areas indicate anatomical foramina. Not to scale.
Fig. 4 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 4. Isolated periotics of a sperm whale Physeteroidea indet. from the Miocene of Patagonia. A. MPEF-PV-605, right periotic. B. MPEF-PV-651, right periotic. C. MPEF-PV-6098, left periotic. D. MLP 80-VIII-30-133a, right periotic. E MLP 80-VIII-30-133b, left periotic. F. MLP 52-X-2-8, right periotic. In dorsal (A1–F1), ventral (A2–F2), medial (A3–F3), and lateral (A4–F4) views. G. MLP 56-IX-2-7, fragmentary periotic in dorsal (G1) and medial (G2) views.
Fig. 2 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 2. Teeth of a sperm whale Physeteroidea indet. previously described as "Preaulophyseter gualichensis" Caviglia and Jorge, 1980, MLP 76-IX5-1, from the Miocene of Gran Bajo del Gualicho Formation, Patagonia, Argentina; in labial (A1) and lingual (A2) views, and detailed view of the crown (A3) and enamel (A4). I and II refer to the two fragmentary teeth of the MLP 76-IX-5-1 (the best and worst preserved tooth, respectively).
Fig. 3. Sperm whale Physeteroidea indet. A in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 3. Sperm whale Physeteroidea indet. A. Left periotic of nomen dubium "Preaulophyseter gualichensis" Caviglia and Jorge, 1980, MLP 76-IX-5-1, from the Miocene of Gran Bajo del Gualicho Formation, Patagonia, Argentina, in dorsal (A1, A2), ventral (A3, A4), medial (A5, A6), and lateral (A7, A8) views. B, C. Two isolated right periotics from the Miocene of Patagonia, MLP 76-IX-2-3 (B) and MLP 76-IX-2-4 (C), in dorsal (B1, C1), ventral (B2, C2), medial (B3, C3), and lateral (B4, C4) views. Photographs (A1, A3, A5, A7, B, C) and explanatory drawings (A2, A4, A6, A8). Abbreviations: abf, anterior bullar facet; aca, aperture for cochlear aqueduct; ai, anterior incisure; ao, accessory ossicle; ava, aperture for the vestibular aqueduct; eh, epitympanic hiatus; fasu, facial sulcus; fo, fenestra ovalis; fosi, foramen singulare; fr, fenestra rotunda; iam, internal acoustic meatus; lt, lateral tuberosity; mf, mallear fossa; pbf, posterior bulla facet; pofc, proximal opening of facial canal (VII); sct, spiral cribiform tract (VIII).
Fig. 1 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 1. Geographic location of studied area in Patagonia, southern Argentina (A) and location of the marine Miocene outcrops (B, stars) where the specimens included in this study were collected: Gran Bajo del Gualicho Formation (1) and Gaiman Formation (2).
Figure 2. Physeteroidea indet., MNUL.Pal.100.755a in An unfamiliar physeteroid periotic (Cetacea: Odontoceti) from the German middle-late Miocene North Sea basin at Gross Pampau
Figure 2. Physeteroidea indet., MNUL.Pal.100.755a, fragment of the right tympanic bulla from the upper Langenfeldian (Serravallian– Tortonian boundary) of Gross Pampau. (a) Lateral, (b) medial, (c) dorsal, and (d) ventral view.
Figure 4. Physeteroidea indet., MNUL.Pal.100.755a in An unfamiliar physeteroid periotic (Cetacea: Odontoceti) from the German middle-late Miocene North Sea basin at Gross Pampau
Figure 4. Physeteroidea indet., MNUL.Pal.100.755a, measurements of the periotic bone applied in this paper (see Table 1). (a, b) Ventral, (c) medial, (d, e) dorsal, (f) lateral, and (g) posterior view.
Figure 3. Physeteroidea indet., MNUL.Pal.100.755a in An unfamiliar physeteroid periotic (Cetacea: Odontoceti) from the German middle-late Miocene North Sea basin at Gross Pampau
Figure 3. Physeteroidea indet., MNUL.Pal.100.755a, right periotic from the upper Langenfeldian (Serravallian–Tortonian boundary) of Gross Pampau. (a, b) Dorsal, (c) medial, (d) lateral, (e, f) ventral, (g) anterior, and (h) posterior view.
Data from: Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): Insights from a new late Miocene dwarf sperm whale from the Pisco Formation
<p class="Abstract"><span><span><span><span><span><span><span><span><span><span><span>Facial compartmentalization in the skull of extant pygmy whales (Kogiidae) is a unique feature among cetaceans that allows the housing of a wide array of organs responsible for echolocation. Recent fossil findings depict a remarkable disparity of the facial bone organization in Miocene kogiids, but the significance of such a rearrangement for the evolution of the clade has been barely explored. Here we describe <i>Kogia danomurai</i> sp. nov., a late Miocene (ca. 5.8 Ma) taxon from the Pisco Formation (Peru), based on a partially preserved skull with a new facial bone pattern. Our phylogenetic analysis recovers <i>K. danomurai</i> as the most basal representative of the extant genus <i>Kogia</i>, displaying a combination of derived (incipiently developed and excavated sagittal facial crest) and plesiomorphic features (high position of the temporal fossa and antorbital notch not transformed into a narrow slit). Furthermore, when compared with the extant <i>Kogia</i>, the facial patterning found in <i>K. danomurai</i> indicates differential development among the facial organs, implying different capabilities of sound production relative to extant <i>Kogia</i> spp. Different facial bone patterns are particularly notable within the multi-species kogiid assemblage of the Pisco Formation, which suggests causal connections between different patterns and feeding ecologies (e.g., nekton piscivory and benthic foraging). At about 5.8 Ma, <i>K. danomurai</i> was part of a cetacean community composed by clades typical of the late Miocene as well as other early representatives of extant taxa, a mixture probably depicting the initial faunal change toward the coastal ecosystem dynamics of the present-day Southeastern Pacific.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): Insights from a new late Miocene dwarf sperm whale from the Pisco Formation
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