Project 2452: F. G. Marx, Naoki Kohno. 2016. A new Miocene baleen whale from the Peruvian desert. Royal Society Open Science. 3:160542.
Specimen: † Incakujira anillodefuego (KPM:NNV730)

Abstract

The Pisco-Ica and Sacaco basins of southern Peru are renowned for their abundance of exceptionally preserved fossil cetaceans, several of which retain traces of soft tissue and occasionally even stomach contents. Previous work has mostly focused on odontocetes, with baleen whales currently being restricted to just three described taxa. Here, we report a new Late Miocene rorqual (family Balaenopteridae), Incakujira anillodefuego gen. et sp. nov., based on two exceptionally preserved specimens from the Pisco Formation exposed at Aguada de Lomas, Sacaco Basin, southern Peru. Incakujira overall closely resembles modern balaenopterids, but stands out for its unusually gracile ascending process of the maxilla, as well as a markedly twisted postglenoid process of the squamosal. The latter likely impeded lateral (omega) rotation of the mandible, in stark contrast with the highly flexible craniomandibular joint of extant lunge-feeding rorquals. Overall, Incakujira expands the still meagre Miocene record of balaenopterids and reveals a previously underappreciated degree of complexity in the evolution of their iconic lunge-feeding strategy.


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Project DOI: 10.7934/P2452, http://dx.doi.org/10.7934/P2452
This project containsMatrices
  • 52 Media
  • 1 Matrix
  • 1 Document
  • 94 Taxa
  • 2 Specimens
  • 272 Characters
Total size of project's media files: 54 MB

Download Project SDD File
Total scored cells: 15834
Total media associated with cells: 250
Total labels associated with cell media: 255
Characters
Total characters: 272
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 634
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:247/25
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MorphoBank Project 2452


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    Felix Marx
    Project Administrator
    Last logged in 10/05/16
    942520272000015834
    (14671, 53, 1110)
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    Taxonomic Overview for Matrix 'M24108' (94 Taxa)

    taxon unscored
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    scored
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    [1] † Zygorhiza kochii
    Last Modified in 07/08/16
    1724624609001
    [2] † Archaeodelphis patrius
    Last Modified in 07/08/16
    14612112105001
    [3] † Waipatia maerewhenua
    Last Modified in 07/08/16
    5321021009001
    [4] Physeter catodon
    Last Modified in 07/08/16
    12229227033001
    [5] † Aetiocetus cotylalveus
    Last Modified in 07/08/16
    10116916902001
    [6] † Aetiocetus polydentatus
    Last Modified in 07/08/16
    9417517503001
    [7] † Aetiocetus weltoni
    Last Modified in 07/08/16
    7619319303001
    [8] † Aglaocetus moreni
    Last Modified in 07/08/16
    117142142013001
    [9] † Aglaocetus patulus
    Last Modified in 07/08/16
    70190188014001
    [10] † Archaebalaenoptera castriarquati
    Last Modified in 07/08/16
    153103103016001
    [11] † Aulocetus latus
    Last Modified in 07/08/16
    16410410305001
    [12] † Balaena montalionis
    Last Modified in 07/08/16
    1807676016001
    [13] Balaena mysticetus
    Last Modified in 07/08/16
    2250249021001
    [14] † Balaena ricei
    Last Modified in 07/08/16
    1629393017001
    [15] † Balaenella brachyrhynus
    Last Modified in 07/08/16
    113141141018001
    [16] Balaenoptera acutorostrata
    Last Modified in 07/08/16
    0256255017001
    [17] † Balaenoptera bertae
    Last Modified in 07/08/16
    191757506001
    [18] Balaenoptera bonaerensis
    Last Modified in 07/08/16
    4252252016001
    [19] Balaenoptera borealis
    Last Modified in 07/08/16
    1256255016001
    [20] † Balaenoptera portisi
    Last Modified in 07/08/16
    77180180015001
    [21] Balaenoptera musculus
    Last Modified in 07/08/16
    2255253017001
    [22] Balaenoptera omurai
    Last Modified in 07/08/16
    7248248017001
    [23] Balaenoptera physalus
    Last Modified in 07/08/16
    0258256016001
    [24] † Balaenoptera ryani
    Last Modified in 07/08/16
    184848305001
    [25] † Balaenoptera siberi
    Last Modified in 07/08/16
    97162160015001
    [26] † Balaenula astensis
    Last Modified in 07/08/16
    105150150017001
    [27] † Balaenula sp.
    Last Modified in 07/08/16
    130125125017001
    [28] † Brandtocetus chongulek
    Last Modified in 07/08/16
    14012812705001
    [29] Caperea marginata
    Last Modified in 07/08/16
    3252246023001
    [30] † Cephalotropis coronatus
    Last Modified in 07/08/16
    118140140014001
    [31] † Cetotherium megalophysum
    Last Modified in 07/08/16
    138117117017001
    [32] † Cetotherium rathkii
    Last Modified in 07/08/16
    110145145017001
    [33] † Cetotherium riabinini
    Last Modified in 07/08/16
    71186186015001
    [34] † ChM pv4745
    Last Modified in 07/08/16
    12814014004001
    [35] † Chonecetus goedertorum
    Last Modified in 07/08/16
    7319619504001
    [36] † Chonecetus sookensis
    Last Modified in 07/08/16
    190808002001
    [37] † Diorocetus chichibuensis
    Last Modified in 07/08/16
    81178178013001
    [38] † Diorocetus hiatus
    Last Modified in 07/08/16
    43216216013001
    [39] † Diorocetus shobarensis
    Last Modified in 07/08/16
    129130130013001
    [40] † Diunatans luctoretemergo
    Last Modified in 07/08/16
    14612312204001
    [41] † Eomysticetus whitmorei
    Last Modified in 07/08/16
    78178178016001
    [42] † Eschrichtioides gastaldii
    Last Modified in 07/08/16
    108149149015001
    [43] Eschrichtius robustus
    Last Modified in 07/08/16
    1259254017001
    [44] † Eubalaena belgica
    Last Modified in 07/08/16
    193747405001
    [45] † Eubalaena shinshuensis
    Last Modified in 07/08/16
    1985858016001
    [46] Eubalaena spp.
    Last Modified in 07/08/16
    0255250022001
    [47] † Gricetoides aurorae
    Last Modified in 07/08/16
    187828203001
    [48] † Herpetocetus bramblei
    Last Modified in 07/08/16
    112143143017001
    [49] † Herpetocetus morrowi
    Last Modified in 07/08/16
    39215215018001
    [50] † Herpetocetus sp.
    Last Modified in 07/08/16
    202646406001
    [51] † Herpetocetus transatlanticus
    Last Modified in 07/08/16
    14711711708001
    [52] † Incakujira anillodefuego
    Last Modified in 10/05/16
    0207353152502551
    [53] † Isanacetus laticephalus
    Last Modified in 07/08/16
    57199199016001
    [54] † Janjucetus hunderi
    Last Modified in 07/08/16
    8218418406001
    [55] † Joumocetus shimizui
    Last Modified in 07/08/16
    139117117016001
    [56] † Kurdalagonus mchedlidzei
    Last Modified in 07/08/16
    125132132015001
    [57] † Llanocetus denticrenatus
    Last Modified in 07/08/16
    10416416404001
    [58] † Mammalodon colliveri
    Last Modified in 07/08/16
    9117417407001
    [59] † Mauicetus parki
    Last Modified in 07/08/16
    73186184015001
    [60] † Megaptera hubachi
    Last Modified in 07/08/16
    69186186017001
    [61] † Megaptera miocaena
    Last Modified in 07/08/16
    103153153016001
    [62] Megaptera novaeangliae
    Last Modified in 07/08/16
    1258256015001
    [63] † Metopocetus durinasus
    Last Modified in 07/08/16
    187797906001
    [64] † Metopocetus hunteri
    Last Modified in 07/08/16
    15810910806001
    [65] † Metopocetus vandelli
    Last Modified in 07/08/16
    16110710605001
    [66] † Micromysticetus rothauseni
    Last Modified in 07/08/16
    182878703001
    [67] † Miocaperea pulchra
    Last Modified in 07/08/16
    110143143019001
    [68] † Morawanocetus yabukii
    Last Modified in 07/08/16
    12414414305001
    [69] † Morenocetus parvus
    Last Modified in 07/08/16
    15411411404001
    [70] † Nannocetus eremus
    Last Modified in 07/08/16
    177919104001
    [71] † NMNZ mm001630
    Last Modified in 07/08/16
    57197197018001
    [72] † OCPC 1178
    Last Modified in 07/08/16
    173979702001
    [73] † OU 22026
    Last Modified in 07/08/16
    236363600001
    [74] † OU 22044
    Last Modified in 07/08/16
    97158158017001
    [75] † OU 22224
    Last Modified in 07/08/16
    16110810803001
    [76] † OU 22705
    Last Modified in 07/08/16
    104153153015001
    [77] † OU gs10897
    Last Modified in 07/08/16
    213565603001
    [78] † Parabalaenoptera baulinensis
    Last Modified in 07/08/16
    88169169015001
    [79] † Parietobalaena campiniana
    Last Modified in 07/08/16
    100156156016001
    [80] † Parietobalaena palmeri
    Last Modified in 07/08/16
    45219213014001
    [81] † Parietobalaena sp.
    Last Modified in 07/08/16
    102155155015001
    [82] † Parietobalaena yamaokai
    Last Modified in 07/08/16
    83179176013001
    [83] † Pelocetus calvertensis
    Last Modified in 07/08/16
    37221221014001
    [84] † Peripolocetus vexillifer
    Last Modified in 07/08/16
    210606002001
    [85] † Pinocetus polonicus
    Last Modified in 07/08/16
    138121121013001
    [86] † Piscobalaena nana
    Last Modified in 07/08/16
    14240239019001
    [87] † Plesiobalaenoptera quarantellii
    Last Modified in 07/08/16
    120136135017001
    [88] † Thinocetus arthritus
    Last Modified in 07/08/16
    118141141013001
    [89] † Tiphyocetus temblorensis
    Last Modified in 07/08/16
    201707001001
    [90] † Titanocetus sammarinensis
    Last Modified in 07/08/16
    117142142013001
    [91] † Uranocetus gramensis
    Last Modified in 07/08/16
    82175175015001
    [92] † UWBM 84024
    Last Modified in 07/08/16
    12014914903001
    [93] † Yamatocetus canaliculatus
    Last Modified in 07/08/16
    68189189015001
    [94] † ZMT 67
    Last Modified in 07/08/16
    115142142015001


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