Bothremydidae

Bothremydidae is an extinct family of side-necked turtles (Pleurodira) known from the Cretaceous and Cenozoic. They are closely related to Podocnemididae, and are amongst the most widely distributed pleurodire groups, with their fossils having been found in Africa, India, the Middle East, Europe, North America and South America. Bothremydids were aquatic turtles with a high morphological diversity, indicative of generalist, molluscivorous, and piscivorous diets. Unlike modern pleurodires, which are exclusively freshwater, bothremydids inhabited freshwater, marine and coastal settings.[1] Their marine habits allowed bothremydids to disperse across oceanic barriers into Europe and North America during the early Late Cretaceous (Cenomanian).[2] The youngest records of the group are indeterminate remains from Saudi Arabia and Oman, dating to the Miocene.[3]

Bothremydidae
Temporal range:
Gafsachelys spp. skull
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Pleurodira
Hyperfamily: Pelomedusoides
Family: Bothremydidae
Baur, 1891
Subfamilies

See text

Taxonomy

The family is split into two subfamilies and a number of tribes.[4]

Bothremydidae

  • Pleurochayah appalachius Adrian et al., 2021 Woodbine Formation, Texas, Late Cretaceous (Cenomanian)
  • "Chrysemys" montolivensis Roman 1897 Montoulieu, France, Oligocene (Rupelian)
  • Sindhochelys ragei Lapparent de broin et al., 2021 Khadro Formation, Pakistan, Paleocene (Danian)
  • Subfamily Bothremydinae Gaffney et al., 2006
    • Tribe Bothremydini Gaffney et al., 2006
    • Palauchelys López-Conde et al. 2021 Olmos Formation, Mexico, Late Cretaceous (Campanian)
    • Khargachelys AbdelGawad et al. 2021 Quseir Formation, Egypt, Late Cretaceous (Campanian)
      • Subtribe Bothremydina Gaffney et al., 2006
      • Subtribe Foxemydina Gaffney et al., 2006
      • Tribe Taphrosphyini Gaffney et al., 2006
          • Ilatardia Pérez-García, 2019 Farin Doutchi Formation, Niger, Late Cretaceous (Maastrichtian)
        • Subtribe Nigermydina Gaffney et al., 2006
          • Arenila Lapparent de Broin and Werner, 1998 Dakhla Formation, Egypt, Late Cretaceous (Maastrichtian)
            • Arenila krebsi Lapparent de Broin and Werner, 1998
        • Subtribe Taphrosphyina Gaffney et al., 2006
          • Azabbaremys Gaffney et al., 2001 Teberemt Formation, Mali, Paleocene
            • Azabbaremys moragjonesi Gaffney et al., 2001
          • Eotaphrosphys Perez-Garcia, 2018 Mont-Aimé, France, Late Cretaceous (Maastrichtian)
            • Eotaphrosphys ambiguum (Gaudry, 1890)
          • Labrostochelys Gaffney et al., 2006 Ouled Abdoun Basin, Morocco, Paleocene
            • Labrostochelys galkini Gaffney et al., 2006
          • Motelomama Perez-Garcia, 2018 Salina Group, Peru, Eocene (Ypresian)
            • Motelomama olssoni (Schmidt, 1931)
          • Phosphatochelys Gaffney and Tong, 2003 Ouled Abdoun Basin, Morocco, Paleocene
            • Phosphatochelys tedfordi Gaffney and Tong, 2003
          • Rhothonemys Gaffney et al., 2006 Ouled Abdoun Basin, Morocco, Paleocene
            • Rhothonemys brinkmani Gaffney et al., 2006
          • Taphrosphys Cope, 1869 (jr synonyms: Amblypeza, Bantuchelys, Prochonias)
            • Taphrosphys congolensis (Dollo, 1912) Landana Formation, Angola, Paleocene
            • Taphrosphys dares Hay, 1908 (nomen dubium)
            • Taphrosphys ippolitoi Gaffney et al., 2006 Ouled Abdoun Basin, Morocco, Paleocene
            • Taphrosphys sulcatus (Leidy, 1856) Hornerstown Formation, New Egypt Formation, New Jersey, Late Cretaceous (Maastrichtian)
          • Ummulisani Gaffney et al., 2006 Morocco, Eocene (Ypresian)
            • Ummulisani rutgersensis Gaffney et al., 2006
          • Crassachelys Bergounioux, 1952 (nomen dubium)
            • Crassachelys neurirregularis Bergounioux, 1952
          • Eusarkia Bergounioux, 1952 (nomen dubium)
            • Eusarkia rotundiformis Bergounioux, 1952
          • Gafsachelys Stefano, 1903 (nomen dubium)
            • Gafsachelys phosphatica Stefano, 1903
            • Gafsachelys moularensis Bergounioux, 1955
    • Tribe Cearachelyini Gaffney et al., 2006
      • Cearachelys Gaffney et al., Santana Formation, Brazil, Early Cretaceous (Albian)
        • Cearachelys placidoi Gaffney et al., 2001
      • Elkanemys Maniel, de la Fuente and Canale, 2021 Candeleros Formation, Argentina, Late Cretaceous (Cenomanian)
        • Elkanemys pritchardi Maniel, de la Fuente and Canale, 2021
      • Itapecuruemys Batista et al., 2020 Itapecuru Formation, Brasil, Early Cretaceous (Aptian)
        • Itapecuruemys amazoniensis Batista et al., 2020
      • Galianemys Gaffney et al., 2002 Kem Kem Group, Morocco, Late Cretaceous (Cenomanian)
        • Galianemys emringeri Gaffney et al., 2002
        • Galianemys whitei Gaffney et al., 2002
  • Subfamily Kurmademydinae Gaffney et al., 2006
    • Tribe Kurmademydini Gaffney et al., 2006

Phylogeny

Below is a cladogram by Gaffney et al. in 2006:[7]

Chelidae

Pelomedusoides

Araripemys

Pelomedusidae

Euraxemydidae

Dirqadium

Euraxemys

Podocnemidioidea

Podocnemidinura

Bothremydidae
Kurmademydini

Kurmademys

Sankuchemys

Bothremydinae
Cearachelyini

Galianemys

Cearachelys

Bothremyodda
Bothremydini

Foxemys (=Polysternon)

Polysternon

Zolhafah

Rosasia

Araiochelys

Chedighaii hutchisoni

Chedighaii barberi

Bothremys cooki

Bothremys magrhebiana

Bothremys kellyi

Bothremys arabicus

Taphrosphyini

Nigeremys

Arenila

Azabbaremys

Labrostochelys

Taphrosphys

Rhothonemys

Phosphatochelys

Ummulisani

References

  1. Joyce, WG; Lyson, TR; Kirkland, JI (September 28, 2016). "An early bothremydid (Testudines, Pleurodira) from the Late Cretaceous (Cenomanian) of Utah, North America". PeerJ. 4: e2502. doi:10.7717/peerj.2502. PMC 5045886. PMID 27703852. Retrieved 23 May 2021.
  2. Pérez-García, A.; Antunes, M.T.; Barroso-Barcenilla, F.; Callapez, P.M.; Segura, M.; Soares, A.F.; Torices, A. (October 2017). "A bothremydid from the middle Cenomanian of Portugal identified as one of the oldest pleurodiran turtles in Laurasia". Cretaceous Research. 78: 61–70. doi:10.1016/j.cretres.2017.05.031.
  3. de Lapparent de Broin, France; Murelaga, Xabier; Pérez-García, Adán; Farrés, Francesc; Altimiras, Jacint (2018-09-28). "Supplementary information:The turtles from the upper Eocene, Osona County (Ebro Basin, Catalonia, Spain): new material and its faunistic and environmental context". Fossil Record. 21 (2): 237–284. doi:10.5194/fr-21-237-2018. ISSN 2193-0066. S2CID 55783731.
  4. The Paleontology Database Bothremydidae entry accessed on 26 January 2011
  5. Pérez-García, Adán (2016). "A new turtle taxon (Podocnemidoidea, Bothremydidae) reveals the oldest known dispersal event of the crown Pleurodira from Gondwana to Laurasia". Journal of Systematic Palaeontology. 15 (9): 709–731. doi:10.1080/14772019.2016.1228549. S2CID 88840423. Pan-Pleurodira is one of the two clades of extant turtles (i.e. Testudines). Its crown group, Pleurodira, has a Gondwanan origin being known from the Barremian. Cretaceous turtle fauna of Gondwana was composed almost exclusively of pleurodires. Extant pleurodires live in relatively warm regions, with a geographical distribution restricted to tropical regions that were part of Gondwana.
  6. Pérez-García, Adán (2018-08-03). "New insights on the only bothremydid turtle (Pleurodira) identified in the British record: Palemys bowerbankii new combination". Palaeontologia Electronica. 21 (2): 1–12. doi:10.26879/849. ISSN 1094-8074.
  7. Gaffney, E. S.; Tong, H.; Meylan, P. A. (2006-11-17). "Evolution of the side-necked turtles: The families Bothremydidae, Euraxemydidae, and Araripemydidae" (PDF). Bulletin of the American Museum of Natural History. New York: American Museum of Natural History. 300: 1–700. doi:10.1206/0003-0090(2006)300[1:EOTSTT]2.0.CO;2. hdl:2246/5824. S2CID 85790134. The family Bothremydidae is a large and diverse group extending from the Albian to the Eocene in North and South America, Europe, Africa, and India. Its monophyly is supported by the presence of a wide exoccipital-quadrate contact, a eustachian tube separated from the incisura columellae auris usually by bone to form a bony canal for the stapes, absence of a fossa precolumellaris, a supraoccipital-quadrate contact (except in the tribe Taphrosphyini), and a posterior enlargement of the fossa orbitalis.
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