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Ischyrocyon

Mammalia - Carnivora - Amphicyonidae

Synonyms
Synonymy list
YearName and author
1904Ischyrocyon Matthew and Gidley p. 246
1926Hadrocyon Stock and Furlong
1988Ischyrocyon Carroll
1998Ischyrocyon Hunt, Jr. p. 215
2019Ischyrocyon May

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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()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Ferae()
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
suborderCaniformiaKretzoi 1943
familyAmphicyonidaeHaeckel 1886
subfamilyAmphicyoninaeTrouessart 1885
genusIschyrocyon

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. †Ischyrocyon Matthew and Gidley 1904
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†Ischyrocyon gidleyi Matthew 1902
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Invalid names: Hadrocyon mohavensis Stock and Furlong 1926 [synonym], Ischyrocyon hyaenodus Matthew and Gidley 1904 [synonym], Pliocyon walkerae Johnston and Christian 1941 [synonym]
Invalid names: Hadrocyon Stock and Furlong 1926 [synonym]
Diagnosis
ReferenceDiagnosis
W. D. Matthew and J. W. Gidley 1904Dentition /3, /1, /4, /3. Molars without metaconid or entoconid. Premolars reduced, massive, crowded, without heel-cusps except on p4, and with no accessory posterior cusps. The dental formula and relative sizes of premolars and molars are as in Amphicyon, but the cusp composition of the molars is that of Cyon. All the teeth are very massive. The lateral incisor is exceptionally large. First premolar two-rooted.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoref
Reproduction: viviparoussubc
Created: 2005-08-30 14:52:56
Modified: 2005-08-30 16:52:56
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Hunt 1998, Lillegraven 1979, Carroll 1988, Ji et al. 2002, Hendy et al. 2009

Age range: base of the Barstovian to the top of the Clarendonian or 16.30000 to 9.40000 Ma

Collections (38 total)


Time interval Ma Country or state Original ID and collection number
Miocene23.03 - 5.333USA (Nevada) I. sp. (18832)
Miocene23.03 - 5.333USA (Texas) I. gidleyi (18375)
Barstovian16.3 - 12.5USA (California) I. sp. (19359 19364 19366 19422 19432)
Barstovian16.3 - 12.5USA (Texas) I. gidleyi (18629)
Barstovian16.3 - 12.5USA (Nebraska) I. sp. (18124 18266 18345) Pliocyon sp. (18443)
Barstovian - Clarendonian16.3 - 9.4USA (Nebraska) I. gidleyi (18077) I. sp. (18306)
Clarendonian12.5 - 9.4USA (Texas) Amphicyon sp. (18640) I. gidleyi (18610 18623)
Clarendonian12.5 - 9.4USA (California) Hadrocyon mohavensis (19383) I. mohavensis (19384)
Clarendonian12.5 - 9.4USA (South Dakota) I. gidleyi (18268) I. hyaenodus (18063) I. sp. (18200 18428 18488)
Clarendonian12.5 - 9.4USA (Nebraska) I. gidleyi (18092 18230 18243 188779) I. sp. (18060 18159 18226 18233 18299 18460)
Late/Upper Clarendonian12.5 - 9.4USA (Nebraska) I. sp. (18066)
Clarendonian - Hemphillian12.5 - 4.9USA (South Dakota) I. sp. (18421)
Late/Upper Miocene11.608 - 5.333USA (Kansas) Hadrocyon sp. (18451)
Late/Upper Miocene11.608 - 5.333USA (Texas) Pliocyon walkerae (18346)