Project 4392: F. F. Garberoglio, L. N. Triviño, A. Albino. 2022. A new madtsoiid snake from the Paleogene of South America (northwestern Argentina), based on an articulated postcranial skeleton. Journal of Vertebrate Paleontology. 42 ( e2128687):e2128687-1-e2128687-14.
Specimen: † Powellophis andina (PVL:PVL 4714)
View: Dorsal view of trunk vertebra

Abstract

The Madtsoiidae are an extinct lineage of snakes known from the Late Cretaceous to the Late Pleistocene, with a rich fossil record distributed mainly across Gondwanan landmasses. However, only a few taxa are represented by cranial or articulated remains, and most madtsoiids are known only by isolated vertebrae. The unambiguous record of
Madtsoiidae from the Cenozoic in South America had been restricted to the genus Madtsoia from Eocene and Oligocene deposits of Patagonia and Brazil. Here, we describe a new madtsoiid taxon, Powellophis andina gen. et sp. nov., based on an articulated postcranial skeleton from the Mealla Formation (middle–late Paleocene) in northwestern Argentina. The new taxon is estimated to be around 3 meters long, with a vertebral morphology sharing similar features with other mid-to-large forms. Its inclusion in a recent analysis of madtsoiid relationships recovers Powellophis as an early member of a clade formed by mostly large bodied and gigantic taxa. Its presence in the Paleocene of northwestern Argentina fills the gap between the diverse Late Cretaceous and Eocene–Oligocene records of madtsoiids in South America, confirms their presence in northern Gondwana by the early Paleogene, and expands the diversity of the group.


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Article DOI: 10.1080/02724634.2022.2128687

Project DOI: 10.7934/P4392, http://dx.doi.org/10.7934/P4392
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 56 Taxa
  • 1 Specimen
  • 265 Characters
Total size of project's media files: 51.52k

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Total scored cells: 7313
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 265
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 592
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:256/9
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MorphoBank Project 4392

    Authors' Institutions

    • Universidad Nacional del Mar de la Plata

    • Museo de La Plata

    • Universidad Nacional de la Plata (UNLP)

    • Universidad Maimonides



    Members

    member name taxa specimens media media
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    Fernando Garberoglio
    Project Administrator
    5611026500007313
    (7139, 0, 174)
    00000


    Taxonomic Overview for Matrix 'M28959' (55 Taxa)

    taxon unscored
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    [1] varanus
    Last Modified in 11/15/22
    2248248015001
    [2] † najash
    Last Modified in 11/15/22
    3123623103001
    [3] leptotyphlops
    Last Modified in 11/15/22
    11244236018001
    [4] anomalepididae
    Last Modified in 11/15/22
    9251245011001
    [5] typhlops
    Last Modified in 11/15/22
    7245237021001
    [6] † dinilysia
    Last Modified in 11/15/22
    3023423203001
    [7] † sanajeh
    Last Modified in 11/15/22
    198676700001
    [8] † wonambi
    Last Modified in 11/15/22
    8418018001001
    [9] † yurlunggur
    Last Modified in 11/15/22
    6520120000001
    [10] anilius
    Last Modified in 11/15/22
    525425406001
    [11] cylindrophis
    Last Modified in 11/15/22
    225925904001
    [12] uropeltidae
    Last Modified in 11/15/22
    6273248011001
    [13] anomochilus
    Last Modified in 11/15/22
    5620320207001
    [14] † pachyrhachis
    Last Modified in 11/15/22
    13912312303001
    [15] † haasiophis
    Last Modified in 11/15/22
    12314114002001
    [16] † eupodophis
    Last Modified in 11/15/22
    15510910901001
    [17] xenopeltis
    Last Modified in 11/15/22
    2252252011001
    [18] loxocemus
    Last Modified in 11/15/22
    226326201001
    [19] erycinae
    Last Modified in 11/15/22
    328226101001
    [20] ungaliophiidae
    Last Modified in 09/02/22
    726125602001
    [21] boinae
    Last Modified in 11/15/22
    027326302001
    [22] pythoninae
    Last Modified in 11/15/22
    127026301001
    [23] tropidophiidae
    Last Modified in 11/15/22
    426025902001
    [24] bolyeriidae
    Last Modified in 09/02/22
    425625308001
    [25] acrochordidae
    Last Modified in 11/15/22
    1024924708001
    [26] Basal colubroides
    Last Modified in 09/02/22
    2325423408001
    [27] † coniophis
    Last Modified in 11/15/22
    209565501001
    [28] † Parviraptor estesi
    Last Modified in 11/15/22
    249151501001
    [29] † Portugalophis lignites
    Last Modified in 11/15/22
    238262601001
    [30] † Diablophis gilmorei
    Last Modified in 11/15/22
    205585802001
    [31] † Eophis woodwardi
    Last Modified in 11/15/22
    254111100001
    [32] † aff.parviraptorestesi
    Last Modified in 11/15/22
    233313101001
    [33] † Menarana nosymena
    Last Modified in 11/15/22
    213515101001
    [34] † Madtsoia camposi
    Last Modified in 11/15/22
    199666600001
    [35] † Nanowana godthelpi
    Last Modified in 11/15/22
    16010410401001
    [36] † Nanowana schrenki
    Last Modified in 11/15/22
    188767601001
    [37] † xiaophis
    Last Modified in 11/15/22
    230343401001
    [38] † Nidophis insularis
    Last Modified in 11/15/22
    221434301001
    [39] † Herensugea caristiorum
    Last Modified in 11/15/22
    225393901001
    [40] † Menarana laurasiae
    Last Modified in 11/15/22
    226383801001
    [41] † Patagoniophis australiensis
    Last Modified in 11/15/22
    220444401001
    [42] † Alamitophis tingamarra
    Last Modified in 11/15/22
    222424201001
    [43] † Madtsoia bai
    Last Modified in 11/15/22
    223424200001
    [44] † Madtsoia madagascariensis
    Last Modified in 11/15/22
    218474700001
    [45] † Gigantophis garstini
    Last Modified in 11/15/22
    223434200001
    [46] † cpag-rankt-v-1-2
    Last Modified in 11/15/22
    235292901001
    [47] † Alamitophis elongatus
    Last Modified in 11/15/22
    222424201001
    [48] † Adinophis fisaka
    Last Modified in 11/15/22
    228363601001
    [49] † Madtsoia pisdurensis
    Last Modified in 11/15/22
    225404000001
    [50] † Platyspondylophis tadkeshwarensis
    Last Modified in 11/15/22
    226383801001
    [51] † Seismophis septentrionalis
    Last Modified in 11/15/22
    226383801001
    [52] † Rionegrophis madtsoioides
    Last Modified in 11/15/22
    225393901001
    [53] † Eomadtsoia ragei
    Last Modified in 11/15/22
    227383701001
    [54] † Simoliophis rochebrunei
    Last Modified in 11/15/22
    224404001001
    [55] † Powellophis andina
    Last Modified in 11/15/22
    219454501001


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    Total project views3778
    Project overview269
    Specimen list436
    Views for media list240
    Media views711Media search (593 views); M848118 (118 views);
    Matrix views208Matrix landing page (191 views); Data Matrix (17 views);
    Documents list179
    Bibliography355
    Taxon list1380




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    Total downloads from project3
    Matrix downloads2Data Matrix (2 downloads);
    Project downloads1