Bridging the gap: Sphenodont remains from the Turonian (Upper Cretaceous) of Patagonia. Palaeobiological inferences

被引：11
|
作者：
Gentil, Adriel R. [1 ,2 ]
Agnolin, Federico L. [1 ,2 ,3 ]
Garcia Marsa, Jordi A. [1 ,2 ]
Motta, Matias J. [1 ,2 ]
Novas, Fernando E. [1 ,2 ]
机构：
[1] Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Anat Comparada & Evoluc Vertebrados, Ave Angel Gallardo 470,C1405DJR, Buenos Aires, DF, Argentina
[2] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
[3] Univ Maimonides, Fdn Hist Nat Felix de Azara, Hidalgo 775, RA-1405 Buenos Aires, DF, Argentina
来源：
CRETACEOUS RESEARCH | 2019年 / 98卷
关键词：
Rhynchocephalia; Huincul formation; Palaeohistology; Cretaceous-Palaeogene boundary; NEUQUEN BASIN ARGENTINA; HUINCUL FORMATION; LEPIDOSAURIA; TUATARA; REPTILIA; DIAPSIDA; RHYNCHOCEPHALIA; DINOSAURIA; EVOLUTION; INSIGHTS;
D O I：
10.1016/j.cretres.2019.01.016
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Rhynchocephalians are a lepidosaur Glade with a single living species. Here we report the first record of an eilenodontine sphenodontian from Turonian beds in South America. The new Turonian basal eilenodontine sphenodontian, Patagosphenos watuku gen. et sp. nov, is described. The specimen is represented by partial cranial and postcranial remains, being very similar to other eilenodontines such as Kaikaifilusaurus and Eilenodon. Moreover, the genus Kaikaifilusaurus is reported for the first time from Turonian beds. Furthermore, this genus is revalidated, being previously considered as a nomen dubium. Paleohistological analysis of Patagosphenos gen. nov reveals a similar bone microstructure to that of the living Sphenodon. We infer that physiological adaptations to survive in cold (freezing conditions) environments may constitute the key pre-adaptation that allowed Sphenodon to survive the Cretaceous-Palaeogene boundary. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：72 / 83
页数：12
相关论文
共 50 条
  • [1] The last of the oldies: a basal rebbachisaurid (Sauropoda, Diplodocoidea) from the early Late Cretaceous (Cenomanian-Turonian) of Patagonia, Argentina
    Lerzo, Lucas Nicolas
    Gallina, Pablo Ariel
    Canale, Juan Ignacio
    Otero, Alejandro
    Carballido, Jose Luis
    Apesteguia, Sebastian
    Makovicky, Peter Juraj
    HISTORICAL BIOLOGY, 2025, 37 (02) : 208 - 233
  • [2] New ankylosaur (Thyreophora, ornithischia) remains from the Upper Cretaceous of Patagonia
    Murray, Alejandro
    Riguetti, Facundo
    Rozadilla, Sebastian
    JOURNAL OF SOUTH AMERICAN EARTH SCIENCES, 2019, 96
  • [3] New abelisaurid remains from the Anacleto Formation (Upper Cretaceous), Patagonia, Argentina
    Gianechini, Federico A.
    Apesteguia, Sebastian
    Landini, Walter
    Finotti, Franco
    Juarez Valieri, Ruben
    Zandonai, Fabiana
    CRETACEOUS RESEARCH, 2015, 54 : 1 - 16
  • [4] First ornithopod remains from the Bajo de la Carpa Formation (Santonian, Upper Cretaceous), northern Patagonia, Argentina
    Cruzado-Caballero, Penelope
    Filippi, Leonardo S.
    Mendez, Ariel H.
    Garrido, Alberto C.
    Diaz-Martinez, Ignacio
    CRETACEOUS RESEARCH, 2018, 83 : 182 - 193
  • [5] Skeletal remains of Tyrannosauroidea (Dinosauria: Theropoda) from the Bissekty Formation (Upper Cretaceous: Turonian) of Uzbekistan
    Averianov, Alexander
    Sues, Hans-Dieter
    CRETACEOUS RESEARCH, 2012, 34 : 284 - 297
  • [6] Vertebrate tracks from the Paso Cordoba fossiliferous site (Anacleto and Allen formations, Upper Cretaceous), Northern Patagonia, Argentina: Preservational, environmental and palaeobiological implications
    Diaz-Martinez, Ignacio
    Console-Gonella, Carlos
    de Valais, Silvina
    Salgado, Leonardo
    CRETACEOUS RESEARCH, 2018, 83 : 207 - 220
  • [7] An unusual theropod frontal from the Upper Cretaceous of north Patagonia
    Paulina-Carabajal, Ariana
    Coria, Rodolfo A.
    ALCHERINGA, 2015, 39 (04): : 514 - 518
  • [8] A Snake Dentary from the Upper Cretaceous of Patagonia
    Gomez, Raul O.
    JOURNAL OF HERPETOLOGY, 2011, 45 (02) : 230 - 233
  • [9] Small-sized abelisaurid (Theropoda: Ceratosauria) remains from the Upper Cretaceous of northwest Patagonia, Argentina
    Canale, Juan I.
    Cerda, Ignacio
    Novas, Fernando E.
    Haluza, Alejandro
    CRETACEOUS RESEARCH, 2016, 62 : 18 - 28
  • [10] A new ornithopod from the Upper Cretaceous (Huincul Formation) of northwestern Patagonia, Argentina: Implications on elasmarian postcranial anatomy
    Nogueira, Rodrigo Alvarez
    Rozadilla, Sebastian
    Agnolin, Federico L.
    Marsa, Jordi A. Garcia
    Motta, Matias J.
    Novas, Fernando E.
    CRETACEOUS RESEARCH, 2024, 159
12345