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Ischyromyidae

Mammalia - Rodentia - Ischyromyidae

Synonymy list
YearName and author
1876Ischyromyidae Alston
1891Ischyromyidae Flower and Lydekker p. 91
1908Ischyromyidae Lambe
1958Ischyromyidae Wood p. 172
1997Ischyromyidae McKenna and Bell
2007Ischyromyidae Dunn and Rasmussen p. 988
2014Ischyromyidae Korth p. 374

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
familyIschyromyidaeAlston 1876
familyIschyromyidaeAlston 1876

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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Maximum body mass: 1 kgg
Minimum body mass: 1 kgg
Body mass estimate: 1 kg
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 16:04:46
Source: g = genus, o = order, subc = subclass, c = class, subp = subphylum
References: Legendre 1988, Nowak 1999, Carroll 1988, Hendy et al. 2009, Ji et al. 2002

Age range

Maximum range based only on fossils: base of the Ypresian to the top of the Whitneyan or 56.00000 to 30.80000 Ma
Minimum age of oldest fossil (stem group age): 55.8 Ma

Collections (658 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Late/Upper Paleocene58.7 - 55.8USA (Wyoming) Microparamys cheradius (80579)
Late/Upper Paleocene58.7 - 55.8France (Oise) Ischyromyidae indet. (166598)
Clarkforkian56.8 - 55.8USA (Montana) Paramys atavus (15079)
Clarkforkian56.8 - 55.8USA (Colorado) Paramys excavatus, Reithroparamys sp. (15346 15347)
Clarkforkian56.8 - 55.8USA (Wyoming) Acritoparamys atavus (190416) Acritoparamys atwateri, Microparamys cheradius, Paramys taurus, Microparamys sp. (15085) Ischyromyidae indet., Paramys excavatus (15092) Paramys annectens (15197) Paramys atavus (15072) Paramys sp. (15075 15083 15094)
Ypresian56.0 - 47.8France (Marne) Ailuravus michauxi (35539) Pantrogna russelli (35533)
Ypresian56.0 - 47.8France (Île-de-France) Microparamys n. sp., Paramys woodi, Paramys sp. (68437)
Ypresian56.0 - 47.8France (Oise) Ischyromyidae indet. (68174)
Ypresian56.0 - 47.8France Ischyromyidae indet. (182667)
Ypresian56.0 - 47.8Belgium (Hainaut) Euromys sp. (87947)
Ypresian56.0 - 47.8India (Gujarat) Ailuravinae indet. (55494) Meldimys sp. (180565)
Ypresian56.0 - 47.8United Kingdom Paramys sp., Meldimys sp. (87950)
Ypresian56.0 - 47.8United Kingdom (England) Ailuravinae indet., Microparamyinae indet. (174239) Meldimys sp., Ailuravinae indet., Sparnacomys sp., Ailuravus mitchelli, Sparnacomys georgei, Pantrogna russelli (38868) Pantrogna mandati (68439) Paramys sp., Meldimys sp., Microparamys nanus (133368)
Ypresian - Lutetian56.0 - 41.3France (Occitanie) Ailuravus michauxi (195457)
Eocene56.0 - 33.9USA (California) Leptotomus sp. (16816) Microparamys woodi (16815)
Graybullian55.8 - 50.3USA (Wyoming) Acritoparamys atwateri, Microparamys cheradius, Paramys copei, Paramys taurus (15701)
Lostcabinian55.8 - 50.3USA (Wyoming) Ischyromyidae indet., Microparamys sp., Acritoparamys francesi, Mattimys kalicola, Paramys copei, Paramys excavatus (15930) Ischyromyidae indet., Paramys copei (16073) Microparamys sp., Thisbemys sp., Mattimys sp., Paramys copei (15917) Paramys copei (15901 16005 16078) Paramys copei, Paramys excavatus (15915)
Lysitean55.8 - 50.3USA (Wyoming) Paramys copei (15880)
Lysitean - Lostcabinian55.8 - 50.3USA (Wyoming) Microparamys sp. (15451)
Wasatchian55.8 - 50.3USA (North Dakota) Lophiparamys murinus, Paramys excavatus (15895)