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Theriodictis

Mammalia - Carnivora - Canidae

Taxonomy
Theriodictis was named by Mercerat (1891). It is not extant.

It was reranked as Canis (Theriodictis) by Mercerat (1891).

It was assigned to Canis by Mercerat (1891); to Canidae by Carroll (1988); to Cerdocyonina by Wang et al. (2008), Tedford et al. (2009) and Ruiz-Ramoni et al. (2022); and to Caninae by Prevosti (2023).

Synonyms
  • Dinocynops was named by Ameghino (1898). It is not extant.

    It was synonymized subjectively with Theriodictis by Prevosti (2023).
Synonymy list
YearName and author
1891Canis (Theriodictis) Mercerat
1891Theriodictis Mercerat
1898Dinocynops Ameghino
1988Theriodictis Carroll
2008Theriodictis Wang et al.
2009Theriodictis Tedford et al. p. 88
2022Theriodictis Ruiz-Ramoni et al. p. 110
2023Theriodictis Prevosti

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
RankNameAuthor
Mammaliaformes
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivora
familyCanidae
subfamilyCaninaeGill 1872
genusTheriodictisMercerat 1891

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.

G. †Theriodictis Mercerat 1891
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Theriodictis floridanus Tedford et al. 2009
Theriodictis platensis Mercerat 1891
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Invalid names: Macrocyon morenoi Lydekker 1894 [synonym], Palaeocyon troglodytes Revilliod 1926 [synonym]
Theriodictis tarijensis Ameghino 1902
Invalid names: Dinocynops Ameghino 1898 [synonym]
Diagnosis
ReferenceDiagnosis
R. H. Tedford et al. 2009Fron- tal sinus penetrates postorbital process and extends to frontoparietal suture; deep zygo- ma with wide masseteric scar; palatines extend posteriorly beyond toothrow; M1– M2 hypocones reduced; M2 small relative to M1 with reduced metacone; coronoid process anteroposteriorly long, dorsoventrally low; angular process expanded dorsoventrally; large fossa for inferior branch of medial pterygoid; m1 lacks metaconid but retains small entoconid; m2 small relative to m1, lacking anterolabial cingulum, strong para- cristid and relatively unreduced metaconid.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoref
Diet 2: omnivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-22 19:28:06
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Hendy et al. 2009, Carroll 1988, Nowak 1991, Lillegraven 1979

Age range: base of the Gelasian to the top of the Lujanian or 2.58800 to 0.01200 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Blancan4.9 - 1.8USA (Florida) Canis sp. (19753)
Late/Upper Pliocene - Early/Lower Pleistocene3.6 - 0.781Venezuela (Monagas) T. sp. (147081 204068)
Gelasian2.588 - 1.806USA (Florida) T. floridanus (20384)
Ensenadan1.2 - 0.781Argentina T. platensis (213464 231060)
Ensenadan1.2 - 0.781Argentina (Buenos Aires) T. platensis (147999 212780 231061) T. sp. (199170)
Ensenadan - Lujanian1.2 - 0.012Argentina (Corrientes) T. sp. (71288)
Late/Upper Pleistocene0.126 - 0.0117Brazil (Rio Grande do Sul) T. sp. (59978)