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Monosaulax

Mammalia - Rodentia - Castoridae

Taxonomy
Monosaulax was named by Stirton (1935). It is not extant.

It was synonymized subjectively with Eucastor by Stout in Skinner and Taylor (1967), Xu (1994), Schiebout and Ting (2000).

It was assigned to Castoridae by Stirton (1935), McKenna and Bell (1997), Evander (1999), Korth (1999), Korth (2002); and to Castoroidini by Korth (2008).

Species
M. curtus, M. pansus, M. progressus, M. skinneri, M. tedi, M. typicus
Species lacking formal opinion data
M. changpeiensis, M. eseri

Synonymy list
YearName and author
1935Monosaulax Stirton
1997Monosaulax McKenna and Bell
1999Monosaulax Evander
1999Monosaulax Korth
2002Monosaulax Korth
2008Monosaulax Korth p. 170

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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
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentiaBowdich 1821
infraorderCastorimorpha
superfamilyCastoroideaGray 1821
familyCastoridae
subfamilyCastoroidinaeAllen 1877
tribeCastoroidiniAllen 1877
genusMonosaulax

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. †Monosaulax Stirton 1935
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†Monosaulax curtus Matthew and Cook 1909
†Monosaulax pansus Cope 1874
†Monosaulax progressus Shotwell 1968
†Monosaulax skinneri Stout 1999
†Monosaulax tedi Korth 1999
†Monosaulax typicus Shotwell 1968
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: amphibiousf
Diet: browserf
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:05:29
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Carroll 1988, Lillegraven 1979, Nowak 1991, Hendy et al. 2009

Age range: base of the Early/Lower Oligocene to the top of the Tortonian or 33.90000 to 7.24600 Ma

Collections (63 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Oligocene33.9 - 27.3China (Gansu) M. sp. (182899)
Aquitanian23.04 - 20.45China (Hebei) M. changpeiensis (42064)
Miocene23.04 - 5.333USA (Georgia) M. sp. (18592)
Miocene23.04 - 5.333Kazakhstan M. sp. (200980)
Burdigalian20.45 - 15.98USA (Delaware) M. sp. (18579)
Early/Lower Hemingfordian18.5 - 16.3USA (Nebraska) M. sp. (17934)
Hemingfordian18.5 - 16.3USA (Oregon) M. sp. (212622 212627)
Hemingfordian18.5 - 16.3Canada (Saskatchewan) M. sp. (18002)
Hemingfordian18.5 - 16.3USA (Colorado) M. curtus (17908)
Late/Upper Hemingfordian18.5 - 16.3USA (Nebraska) M. sp. (17889)
Barstovian16.3 - 12.5USA (Nevada) M. large species, M. curtus, M. pansus (19088) M. sp. (19103 181731)
Barstovian16.3 - 12.5USA (South Dakota) Eucastor curtus (18397) M. sp. (18160 18303 18455 174578)
Barstovian16.3 - 12.5USA (Wyoming) M. curtus (18868)
Barstovian16.3 - 12.5USA (Nebraska) Eucastor curtus (18090 18141) Eucastor curtus, Eucastor pansus (18208) Eucastor pansus (18102) M. curtus (18031 18164 18209 18261) M. pansus (18275) M. skinneri (18109 18155 18281 18284 18442) M. sp. (18027 18124 18165 18232)
Barstovian16.3 - 12.5USA (California) M. pansus (19193 19550) M. sp. (19460)
Barstovian16.3 - 12.5USA (Montana) M. sp. (18894)
Barstovian16.3 - 12.5USA (Oregon) M. progressus (19011) M. typicus (19017)
Early/Lower Barstovian16.3 - 12.5USA (Nebraska) M. curtus (17905 17972) M. tedi (17976)
Early/Lower Barstovian16.3 - 12.5USA (Montana) M. pansus (18803)
Barstovian - Clarendonian16.3 - 9.4USA (Nebraska) M. sp. (18077)
Langhian15.98 - 13.82France M. minutus (90354)
Middle Miocene15.98 - 11.63China (Nei Mongol) M. sp. (13484)
MN 5 - MN 915.98 - 9.67France M. minutus (191825 191828)
Middle Miocene - Late/Upper Miocene15.98 - 5.333China (Nei Mongol) M. tunggurensis (13483)
Serravallian13.82 - 11.63China (Ningxia) M. sp. (42539)
Sarmatian12.8 - 11.63Türkiye M. eseri (56563)
Clarendonian12.5 - 9.4USA (Nebraska) M. pansus (18299)
Tortonian11.63 - 7.246China (Yunnan) M. sp. (11798)
Turolian8.725 - 5.09China (Yunnan) M. sp. (44220 44221 44222 44223 44224)