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Euclastidae

Osteichthyes - Testudines - Euclastidae

Discussion

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Synonymy list
YearName and author
2025Euclastidae France de Lapparent et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
superfamilyChelonioidea
familyEuclastidae
familyEuclastidae

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Fm. †Euclastidae France de Lapparent et al. 2025
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G. †Erquelinnesia Dollo 1887
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G. †Euclastes Cope 1870
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†Euclastes acutirostris Jalil et al. 2009
†Euclastes coahuilaensis Brinkman et al. 2009
†Euclastes melii Misuri 1910
†Euclastes meridionalis de la Fuente and Casadio 2000
†Euclastes montenati France de Lapparent et al. 2025
†Euclastes platyops Cope 1870
†Euclastes wielandi Hay 1908
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Invalid names: Catapleura ponderosa Cope 1871 [synonym], Erquelinnesia molaria Hay 1908 [synonym], Euclastes priscus Lynch and Parham 2003 [synonym], Osteopygis repandus Cope 1868 [synonym], Osteopygis roundsi Weems 1988 [synonym], Osteopygoides priscus Karl et al. 1998 [synonym]
Invalid names: Catapleura Cope 1870 [synonym], Osteopygoides Karl et al. 1998 [synonym], Pampaemys de la Fuente and Casadio 2000 [synonym]
G. †Glossochelys Seeley 1871
G. †Mexichelys Parham and Pyenson 2010
G. †Pacifichelys Parham and Pyenson 2010
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†Pacifichelys hutchisoni Lynch and Parham 2003
†Pacifichelys urbinai Parham and Pyenson 2010
Diagnosis
ReferenceDiagnosis
d. B. France de Lapparent et al. 2025Chelonioidea with a broad skull, dorsally covered throughout, without nasals. Family characterized by the presence of a secondary palate; the arrangement of the constituting bones is basically in the line of the morphotype of the extant cheloniids (premaxillae, maxillae, lowered vomer ventrally, sutured to palatines, with vomero-palatines choanae).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesuperf
Locomotion: actively mobilec
Life habit: aquaticsubo
Diet: omnivoresubo
Reproduction: oviparoussubo
Created: 2017-04-17 10:37:12
Modified: 2017-04-17 15:37:12
Source: superf = superfamily, subo = suborder, c = class, subp = subphylum
References: Carroll 1988, Uetz 2005, Kiessling 2004, Bush and Bambach 2015, Hendy et al. 2009

Age range: base of the Middle Campanian to the top of the Messinian or 83.60000 to 5.33300 Ma

Collections (39 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Campanian - Middle Campanian83.6 - 72.2USA (New Jersey) Dollochelys sp. (48725)
Late/Upper Campanian83.6 - 72.2Mexico (Coahuila) Euclastes coahuilaensis (154161 154244)
Middle Campanian83.6 - 72.2USA (South Carolina) Euclastes wielandi (180790 201600)
Early/Lower Maastrichtian72.2 - 66.0Angola (Namibe) Euclastes sp. (106705)
Late/Upper Maastrichtian72.2 - 66.0Chile (Biobio) Euclastes sp. (150921)
Late/Upper Maastrichtian72.2 - 66.0USA (New Jersey) Catapleura ponderosa, Lytoloma wielandi (88034) Lytoloma angusta, Erquelinnesia molaria (87902) Lytoloma wielandi, Osteopygis repandus (48570) Toxochelys atlantica (167780)
Late/Upper Maastrichtian72.2 - 66.0Chile Osteopygis sp. (36948)
Maastrichtian72.2 - 66.0USA (California) Osteopygis sp. (76728)
Late/Upper Maastrichtian - Early/Lower Paleocene72.2 - 61.66USA (New Jersey) Toxochelys atlantica, Osteopygis emarginatus (26819)
Danian66.0 - 61.66Argentina (La Pampa) Pampaemys meriodionalis (5160)
Danian66.0 - 61.66France (Hauts de- France) Euclastes wielandi (241484)
Danian66.0 - 61.66USA (Maryland) Euclastes wielandi (167186)
Danian66.0 - 61.66Morocco Osteopygis emarginatus (83311 137838 137839)
Danian66.0 - 61.66Argentina (Río Negro) Euclastes meridionalis (141237)
Danian - Thanetian66.0 - 56.0Morocco Euclastes acutirostris (123123)
Late/Upper Paleocene59.24 - 56.0USA (Virginia) Osteopygis roundsi (60967 61147)
Late/Upper Paleocene59.24 - 56.0USA (New Jersey) Euclastes platyops (82001)
Late/Upper Paleocene59.24 - 56.0USA (Maryland) Osteopygis roundsi, Dollochelys coatesi (84046)
Thanetian59.24 - 56.0USA (Maryland) Euclastes sp. (84045)
Thanetian59.24 - 56.0France (Hauts-de-France) Euclastes montenati (241483)
Thanetian59.24 - 56.0USA (New Jersey) Rhetechelys platyops (3113)
Ypresian56.0 - 48.07USA (Maryland ) Catapleura sp. (124192)
Ypresian56.0 - 48.07Belgium (Hainaut) Dollochelys casieri, Pachyrhynchus gosseleti (87947)
Ypresian56.0 - 48.07United Kingdom Chelone planimentum (167275)
Eocene56.0 - 33.9USA (New Jersey) Chelone sopita (84043)
Lutetian48.07 - 41.03Ukraine (Luhansk) Glossochelys sp. (120885)
Rupelian33.9 - 27.3USA (South Carolina) Euclastes sp. (188994)
Burdigalian - Messinian20.45 - 5.333Italy (Apulia) Euclastes melii (47125)
Langhian15.98 - 13.82USA (California) Euclastes hutchisoni (59059)
Tortonian11.63 - 7.246Peru Pacifichelys urbinai (95373)
Messinian - Zanclean7.246 - 3.6Australia (Victoria) Pacifichelys sp. (154112)