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Trionyx silvestris

Reptilia - Testudines - Trionychidae

Taxonomy
Trionyx silvestris was named by Walker and Moody (1974). Its type specimen is BMNH R 8567, a skull, and it is a 3D body fossil. Its type locality is Abbey Wood, which is in a Ypresian marine sandstone in the Blackheath Beds Formation of the United Kingdom.

Sister species lacking formal opinion data
T. pliopedemontanus

Synonyms
  • Trionyx michauxi was named by Broin (1977). Its type specimen is LG-FSM 3488, a skull, and it is a 3D body fossil. Its type locality is Mancy, which is in a Ypresian terrestrial horizon in the Sables a Unios et Teredines Formation of France.

    It was synonymized subjectively with Trionyx silvestris by Georgalis and Joyce (2017).
Synonymy list
YearName and author
1974Trionyx silvestris Walker and Moody
1977Trionyx michauxi Broin p. 164

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
familyTrionychidaeGray 1825
subfamilyTrionychinaeGray 1825
genusTrionyx
speciessilvestris

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.

†Trionyx silvestris Walker and Moody 1974
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Invalid names: Trionyx michauxi Broin 1977 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Body part: carapacef
Adult length: 100 to < 1000f
Grouping: solitaryf
Environment: brackish, freshwaterf
Locomotion: actively mobilef
Life habit: aquaticf
Diet: piscivoref
Diet 2: carnivoref
Reproduction: oviparousf
Created: 2005-08-25 13:24:04
Modified: 2005-09-09 19:45:41
Source: f = family, subp = subphylum
References: Carroll 1988, Ernst and Barbour 1989

Age range: Ypresian or 56.00000 to 48.07000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Ypresian56.0 - 48.07France (Marne) Trionyx michauxi (35539 35540 181653)
Ypresian56.0 - 48.07United Kingdom (England) Trionyx silvestris (type locality: 38868)
Ypresian56.0 - 48.07France (Champagne-Ardenne) Trionyx michauxi (73387)
Ypresian - Lutetian56.0 - 41.03France (Occitanie) Trionyx michauxi (195457)