Project 3520: O. Lambert, S. J. Godfrey, E. M. Fitzgerald. 2018. Yaquinacetus meadi, a new latest Oligocene–early Miocene dolphin (Cetacea, Odontoceti, Squaloziphiidae, fam. nov.) from the Nye Mudstone (Oregon, U.S.A.). Journal of Vertebrate Paleontology. 38 (6):e1559174.
Specimen: † Yaquinacetus meadi (unvouchered)
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Abstract

Represented by a nearly complete cranium with associated mandible, teeth, and vertebrae, Yaquinacetus meadi is a new genus and species of archaic homodont odontocete from the latest Oligocene–early Miocene (24–19.2 Ma) of Oregon, U.S.A. The new species is characterized by a moderately elongated rostrum bearing approximately 51 alveoli per tooth row and a knob-like, rectangular vertex. Together with Squaloziphius emlongi from the early Miocene of Washington State, Y. meadi constitutes a new odontocete family, Squaloziphiidae, fam. nov., diagnosed by a unique combination of characters, including transversely wide dorsal opening of the mesorostral groove at base of rostrum, followed posteriorly by an abrupt narrowing; thickened lateral margin of the maxilla in the antorbital region making a long and laterally concave crest; and massive, anteroposteriorly and ventrally long postglenoid process of the squamosal. Although sharing with Ziphiidae the presence of transverse premaxillary crests on the vertex, Squaloziphiidae differs in the pterygoid sinus fossa being shorter anteriorly and ventrally; the tubercule of the malleus being less reduced; and lacking a pair of enlarged alveoli for mandibular tusks. Our phylogenetic analysis confirms the sister-group relationship between S. emlongi and Y. meadi, either as late diverging stem odontocetes or as early crown odontocetes, but distant from Ziphiidae. These results confirm the northeastern Pacific as a center of diversification for several groups of archaic homodont odontocetes during the late Oligocene–early Miocene.


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Article DOI: 10.1080/02724634.2018.1559174

Project DOI: 10.7934/P3520, http://dx.doi.org/10.7934/P3520
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 102 Taxa
  • 1 Specimen
  • 324 Characters


Download Project SDD File
Total scored cells: 25224
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 324
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 974
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:156/168
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MorphoBank Project 3520


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
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    Tanya Berardini
    Project Administrator
    Last logged in 08/29/19
    102113240025224
    (23152, 0, 2072)
    000
    Olivier Lambert
    Full membership
    Last logged in 08/28/19
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    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M26211' (102 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
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    NPA
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    "-" cellscell images labels on
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    [1] Bos taurus
    Last Modified in 08/28/19
    8235227089002
    [2] Sus scrofa
    Last Modified in 08/28/19
    2227223099002
    [3] Hippopotamus amphibius
    Last Modified in 08/28/19
    32213208084002
    [4] † Georgiacetus vogtlensis
    Last Modified in 08/28/19
    97208191036002
    [5] † Mammalodon colliveri
    Last Modified in 08/28/19
    81182179064002
    [6] † Janjucetus hunderi
    Last Modified in 08/28/19
    68189189067002
    [7] Caperea marginata
    Last Modified in 08/28/19
    61225217046002
    [8] Eubalaena glacialis
    Last Modified in 08/28/19
    37246240047002
    [9] Eschrichtius robustus
    Last Modified in 08/28/19
    33252245046002
    [10] Balaenoptera physalus
    Last Modified in 08/28/19
    42235229053002
    [11] Megaptera novaeangliae
    Last Modified in 08/28/19
    106192176042002
    [12] Physeter macrocephalus
    Last Modified in 08/28/19
    22280271031002
    [13] Kogia breviceps
    Last Modified in 08/28/19
    14275268042002
    [14] † Ninoziphius platyrostris
    Last Modified in 08/28/19
    9625022701002
    [15] Tasmacetus shepherdi
    Last Modified in 08/28/19
    20306294010002
    [16] Ziphius cavirostris
    Last Modified in 08/28/19
    9310293022002
    [17] Berardius bairdii
    Last Modified in 08/28/19
    19294287018002
    [18] Mesoplodon europaeus
    Last Modified in 08/28/19
    23297281020002
    [19] Inia geoffrensis
    Last Modified in 08/28/19
    7324307010002
    [20] Platanista gangetica
    Last Modified in 08/28/19
    28292283013002
    [21] Lipotes vexillifer
    Last Modified in 08/28/19
    1231030507002
    [22] Pontoporia blainvillei
    Last Modified in 08/28/19
    731930908002
    [23] Delphinapterus leucas
    Last Modified in 08/28/19
    11316299014002
    [24] Phocoena phocoena
    Last Modified in 08/28/19
    5322305014002
    [25] Phocoenoides dalli
    Last Modified in 08/28/19
    19308289016002
    [26] Tursiops truncatus
    Last Modified in 08/28/19
    7304290027002
    [27] Pseudorca crassidens
    Last Modified in 08/28/19
    12310296016002
    [28] Orcinus orca
    Last Modified in 08/28/19
    19313289016002
    [29] Orcaella brevirostris
    Last Modified in 08/28/19
    22299283019002
    [30] Globicephala macrorhynchus
    Last Modified in 08/28/19
    12316294018002
    [31] Grampus griseus
    Last Modified in 08/28/19
    13306286025002
    [32] Leucopleurus acutus
    Last Modified in 08/28/19
    21303286017002
    [33] Delphinus delphis
    Last Modified in 08/28/19
    5308300019002
    [34] † Zygorhiza kochii
    Last Modified in 08/28/19
    78231223023002
    [35] † ChM pv5720
    Last Modified in 08/28/19
    89225217018002
    [36] † ChM pv4745
    Last Modified in 08/28/19
    133167167024002
    [37] † Chonecetus goedertorum
    Last Modified in 08/28/19
    140167154030002
    [38] † Aetiocetus cotylalveus
    Last Modified in 08/28/19
    137168157030002
    [39] † Eomysticetus whitmorei
    Last Modified in 08/28/19
    96188184044002
    [40] † Micromysticetus rothauseni
    Last Modified in 08/28/19
    20910895020002
    [41] † Diorocetus hiatus
    Last Modified in 08/28/19
    64223213047002
    [42] † Pelocetus calvertensis
    Last Modified in 08/28/19
    67221208049002
    [43] † Parabalaenoptera baulinensis
    Last Modified in 08/28/19
    179114102043002
    [44] † Archaeodelphis patrius
    Last Modified in 08/28/19
    153159145026002
    [45] † ChM pv4746
    Last Modified in 08/28/19
    109208192023002
    [46] † Xenorophus sp.
    Last Modified in 08/28/19
    89225213022002
    [47] † Xenor sloanii
    Last Modified in 08/28/19
    20311198023002
    [48] † ChM pv4834
    Last Modified in 08/28/19
    99219203022002
    [49] † Albertocetus meffordorum
    Last Modified in 08/28/19
    122193169033002
    [50] † GSM 1098
    Last Modified in 08/28/19
    84250227013002
    [51] † Cotylocara macei
    Last Modified in 08/28/19
    90242220014002
    [52] † ChM pv2758
    Last Modified in 08/28/19
    162148139023002
    [53] † ChM pv5711
    Last Modified in 08/28/19
    137179168019002
    [54] † ChM pv4178
    Last Modified in 08/28/19
    128185174022002
    [55] † Agorophius pygmaeus
    Last Modified in 08/28/19
    174145129021002
    [56] † ChM pv5852
    Last Modified in 08/28/19
    178135126020002
    [57] † ChM pv2764
    Last Modified in 08/28/19
    57257244023002
    [58] † ChM pv2761
    Last Modified in 08/28/19
    108224195021002
    [59] † Patriocetus kazakhstanicus
    Last Modified in 08/28/19
    159164145020002
    [60] † Waipatia maerewhenua
    Last Modified in 08/28/19
    85249226013002
    [61] † Papahu taitapu
    Last Modified in 08/28/19
    139181172013002
    [62] † ChM pv4961
    Last Modified in 08/28/19
    91221212021002
    [63] † Squalodon calvertensis
    Last Modified in 08/28/19
    66254239019002
    [64] † Notocetus vanbenedeni
    Last Modified in 08/28/19
    78246222024002
    [65] † Prosqualodon davidis
    Last Modified in 08/28/19
    103217201020002
    [66] † Squaloziphius emlongi
    Last Modified in 08/28/19
    17615714305002
    [67] † Xiphiacetus
    Last Modified in 08/28/19
    51285262011002
    [68] † Zarhachis flagellator
    Last Modified in 08/28/19
    54271247023002
    [69] † Parapontoporia wilsoni
    Last Modified in 08/28/19
    16916114906002
    [70] † Parapontoporia sternbergi
    Last Modified in 08/28/19
    7727424007002
    [71] † Brachydelphis mazeasi
    Last Modified in 08/28/19
    11322620605002
    [72] † Orycterocetus crocodilinus
    Last Modified in 08/28/19
    77227213034002
    [73] † Kentriodon pernix
    Last Modified in 08/28/19
    5627126404002
    [74] † Delphinodon dividum
    Last Modified in 08/28/19
    8626323404002
    [75] † Kampholophus serrulus
    Last Modified in 08/28/19
    12724319304002
    [76] † Lophocetus repenningi
    Last Modified in 08/28/19
    20113111805002
    [77] † Pliopontos littoralis
    Last Modified in 08/28/19
    7227324408002
    [78] † Atocetus nasalis
    Last Modified in 08/28/19
    9224022606002
    [79] † Atocetus iquensis
    Last Modified in 08/28/19
    4230827606002
    [80] † Albireo whistleri
    Last Modified in 08/28/19
    49277263012002
    [81] † Simocetus rayi
    Last Modified in 08/28/19
    108215204012002
    [82] † Hadrodelphis calvertense
    Last Modified in 08/28/19
    7425624604002
    [83] † Liolithax pappus
    Last Modified in 08/28/19
    11222420804002
    [84] † Macrokentriodon morani
    Last Modified in 08/28/19
    11221520705002
    [85] † Eodelphinus kabatensis
    Last Modified in 08/28/19
    12622219305002
    [86] † Hemisyntrachelus pisanus
    Last Modified in 08/28/19
    179144135010002
    [87] † Hemisyntrachelus cortesii
    Last Modified in 08/28/19
    10524521207002
    [88] † Piscolithax longirostris
    Last Modified in 08/28/19
    51298263010002
    [89] † Australithax intermedia
    Last Modified in 08/28/19
    17015514608002
    [90] † Lomacetus ginsburgi
    Last Modified in 08/28/19
    18114913706002
    [91] † Pterophocoena nishinoi
    Last Modified in 08/28/19
    15020917103002
    [92] † Haborophocoena toyoshimai
    Last Modified in 08/28/19
    11421720406002
    [93] † Haborophocoena minutus
    Last Modified in 08/28/19
    17715714205002
    [94] † Rudicetus squalodontoides
    Last Modified in 08/28/19
    18313713605002
    [95] † Tagicetus joneti
    Last Modified in 08/28/19
    17714814601002
    [96] † Brachydelphis jahuayensis
    Last Modified in 08/28/19
    19913912401002
    [97] † Brujadelphis ankylorostris
    Last Modified in 08/28/19
    9724022601002
    [98] † Inticetus vertizi
    Last Modified in 08/28/19
    14918917500002
    [99] † Chilcacetus cavirhinus
    Last Modified in 08/28/19
    13320519100002
    [100] † Yaquinacetus meadi
    Last Modified in 08/28/19
    8324724100002
    [101] † Macrodelphinus kelloggi
    Last Modified in 08/28/19
    20612611800002
    [102] † Argyrocetus bakersfieldensis
    Last Modified in 08/28/19
    21111811300002


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    Views for media list7
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