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48 results for “Mammalodon”
Fig. 3. A-F, L, M in Mysticetes baring their teeth: a new fossil whale, Mammalodon hakataramea, from the Southwest Pacific
Fig. 3. A-F, L, M, holotype left tympanic bulla of Mammalodon hakataramea, OU 22026; all views show the bulla coated with sublimed ammonium chloride and lit from upper left. A, dorsal. B, ventral. C, posterior. D, anterior. E, lateral. F, medial. G-K, holotype right tympanic bulla of Mammalodon colliveri Pritchard, NMV P199986, with views mirrored for ease of comparison with M. hakataramea; bulla is coated with sublimed ammonium chloride and mirrored views show lighting from upper right. G, dorsal. H, ventral. I, medial. J, lateral. K, posterior. L, M, enlarged views of left tympanic bulla of Mammalodon hakataramea to show anterior pedicle. L, slightly dorsomedial posterior view. M, slightly posterior dorsomedial view.
Fig. 4 in Mysticetes baring their teeth: a new fossil whale, Mammalodon hakataramea, from the Southwest Pacific
Fig. 4. Relevant detail of phylogeny from Marx and Fordyce (2015: Fig. 2), showing relationships of Mammalodon hakataramea and other Mysticeti basal to the crown group. Pli., Pliocene; Pls., Pleistocene.
Fig. 2. A-G, I in Mysticetes baring their teeth: a new fossil whale, Mammalodon hakataramea, from the Southwest Pacific
Fig. 2. A-G, I, holotype of Mammalodon hakataramea, OU 22026; all material coated with sublimed ammonium chloride and lit from upper left. A-E, individual isolated teeth in labial or lingual view. F, G, I, holotype skull roof of Mammalodon hakataramea. F, I, dorsal view, anterior towards the top; G, oblique dorsolateral view from the left, anterior towards the lower left. H, holotype skull of Mammalodon colliveri Pritchard, NMV P199986, dorsal view, not coated with sublimed ammonium chloride. H and I are shown at the same scale to compare the differences in size and profile between the two Mammalodon species. The two dashed lines show the position of the apex of the nuchal crest and the dorsal lip of the foramen magnum in M. colliveri; M. hakataramea is aligned with the upper line.
Fig. 1 in Mysticetes baring their teeth: a new fossil whale, Mammalodon hakataramea, from the Southwest Pacific
Fig. 1, Locality map and stratigraphy of the Sisters Creek-Homestead Creek area of Hakataramea Valley. The stratigraphic column, right, is modified from that of Tsai and Fordyce (2015) for "Haughs' Quarry", which provides the nearest detailed column to Sisters Creek. Mammalodon hakataramea came from about the horizon identified as the diffuse shellbed with Lentipecten hochstetteri and brachiopods.
Figure 48 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 48. Temporal distribution and phylogenetic relationships of basal mysticetes, based upon the tree in Figure 41. Broad unbroken bars represent known stratigraphical distribution error range. Narrow unbroken bars represent inferred ghost lineages. The narrow broken bar represents the uncertain phylogenetic position of Kekenodontidae (excluded from cladistic analyses) relative to stem and crown group Cetacea. Branches ending in arrows represent clades with temporal ranges younger than Early Miocene. Taxa in bold represent toothed archaic mysticetes. Area of grey shading represents the temporal range of molecular and maximum likelihood estimates of the Mysticeti/Odontoceti divergence. Numbered stars at nodes represent fossil records providing first appearance datums for select clades: (1) Basilosauridae, 40–41 Mya (Gingerich et al., 1997; Köhler & Fordyce, 1997); (2) Odontoceti, 33–34 Mya (Barnes et al., 2001); (3) Aetiocetidae, 30–32 Mya (LACM 149259); (4) Chaeomysticeti, 31–34 Mya (Uhen, 2007b); (5) crown group Mysticeti, ~28 Mya (Fordyce, 2002c; Sasaki et al., 2005). See text for discussion and sources of clade ages. For abbreviations see Material and methods.
Figure 46 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 46. Most parsimonious optimization of select characters onto the phylogenetic hypothesis presented in Figure 41, showing the evolution of mysticete body size, and characters related to feeding and hearing functional complexes. Note that most morphological features implicated in bulk filter feeding evolve prior to the unequivocal appearance of this feeding mode. Taxa in bold represent toothed archaic mysticetes. For abbreviations see Material and methods.
Figure 45 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 45. Artistic restoration of Mammalodon colliveri in the Late Oligocene seas off south-east Australia. The three fish depicted on the left side of the figure are an extinct species of whiting (Sillago pliocaenica Stinton, 1952), known from otoliths discovered in the Jan Juc Formation (Stinton, 1958; Fitzgerald, 2004) (painting by Brian Choo, Museum Victoria, Melbourne, Australia).
Figure 43 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 43. Skulls of Mammalodon colliveri (A, C) and Janjucetus hunderi (B, D) in dorsal (top row) and right lateral (bottom row) views, illustrating synapomorphies of Mammalodontidae. Numbers in parentheses designate synapomorphic characters from the character list (Appendix 2). Skulls are scaled to the same length. Dashed lines represent reconstructed regions of cranial anatomy.
Figure 42 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 42. Previous phylogenetic hypotheses of toothed mysticete relationships: A, Geisler & Sanders (2003); B, Fitzgerald (2006); C, Bouetel & Muizon (2006); D, Steeman (2007); E, Deméré et al. (2008); and F, Deméré & Berta (2008). Phylogenetic trees (A), (B), (C), (D) and (F) are based on morphologic data, whereas (E) is based on morphologic and molecular data. Taxa in bold represent toothed archaic mysticetes. For abbreviations see Material and methods.
Figure 39. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 39. Mammalodon colliveri, NMV P199986, holotype elements: manubrium of sternum in: A, ventral; and B, dorsal views; right thyrohyoid in: C, anteroventral; and D, posterodorsal views.
Figure 40. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 40. Mammalodon colliveri, NMV P199986, holotype axis vertebra (C2): A, anterior; B, posterior; C, dorsal; D, ventral; E, right lateral; and F, left lateral views.
Figure 38 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 38. Isolated left?p4, NMV P17535, associated with holotype skull of Mammalodon colliveri, NMV P199986, whitened with ammonium chloride: A, buccal; B, lingual; C, distal; and D, occlusal views.
Figure 37. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 37. Mammalodon colliveri, NMV P199986, right mandibular teeth (p2 to m3), whitened with ammonium chloride: A, buccal; B, occlusal; and C, lingual views.
Figure 35 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 35. Isolated left upper incisor or right i1 associated with holotype skull of Mammalodon colliveri, NMV P199986, whitened with ammonium chloride: A, labial; and B, lingual views.
Figure 33 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 33. Mysticeti gen. et sp. indet., NMV P16417, incomplete right mandible, whitened with ammonium chloride: A, lateral; and B, medial views. C, symphysis in medial view.
Figure 32. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 32. Mammalodon colliveri, NMV P199986, holotype mandible (right side), whitened with ammonium chloride: A, anterior; and B, posterior views. C, alveoli for lower incisors and canine in dorsal view. D, symphyseal region in medial view, area enclosed by dotted line indicating the inferred position of the symphysis.
Figure 31. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 31. Mammalodon colliveri, NMV P199986, holotype mandible (right side): A, lateral; and B, medial views, based on Figure 30, showing main anatomical features. C, reconstruction of left and right mandibles in dorsal view. Diagonal solid lines indicate major breaks; diagonal dashed lines indicate matrix.
Figure 30. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 30. Mammalodon colliveri, NMV P199986, holotype mandible (right side), whitened with ammonium chloride: A, lateral; B, dorsal; and C, medial views.
Figure 29. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 29. Mammalodon colliveri, NMV P199986, right tympanic bulla, whitened with ammonium chloride: A, posterior; B, medial; and C, lateral views. Diagonal solid lines indicate major breaks.
Figure 28. Mammalodon colliveri, NMV P199986 in The morphology and systematics of Mammalodon colliveri (Cetacea: Mysticeti), a toothed mysticete from the Oligocene of Australia
Figure 28. Mammalodon colliveri, NMV P199986, right tympanic bulla, whitened with ammonium chloride: A, ventral; and B, dorsal views. Diagonal solid lines indicate major breaks.
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OpenNeuro
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