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Baiomys taylori

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Northern Pygmy Mouse
(Baiomys taylori)
Range
Taxonomic classification
Order:Rodentia
Suborder:Supramyomorpha
Infraorder:Myomorphi
Superfamily:Muroidea
Family:Cricetidae
Subfamily:Neotominae
Tribe:Baiomyini
Genus:Baiomys
Binomial details
Baiomys taylori (O. Thomas, 1887)

Description

From Eshelman & Cameron (1987): "Juveniles are uniformly gray above and lighter below (Packard, 1960). The dorsal pelage of adults varies from reddish brown, through gray to almost black above and white to creamy buff or gray below. The tail is covered with short hairs. Color of tail differs among subspecies and may be uniformly gray or bicolored (lighter ventrally)."

From Schmidly & Bradley (2016): "Smallest of the cricetid mice in Texas, with the exception of two harvest mice, Reithrodontomys humulis and R. montanus, both of which differ in having grooved upper incisors and longer tails. Upperparts grizzled grayish in adults, blackish in juveniles; underparts smoke gray; tail about three times as long as hind foot, sparsely haired, and decidedly shorter than head and body. They have a strong, musky odor similar to that of house mice, Mus musculus."

  • Baiomys taylori observed in Gonzales County, Texas, by Robby Deans.
  • Baiomys taylori observed in Baird, Texas, by Joel Brant.

External measurements

Length measurements are in millimeters (mm) and weight measurements are in grams (g), unless stated otherwise. If available, the sample size (n=) is provided. If a range is not provided and n= is not given, then the listed measurement represents an average.

Part of range Reference Total length Tail length Hindfoot length Ear length Mass
Arizona (southeastern) Hoffmeister (1986) 92–113 (n=12) 33–47 (n=12) 13–15 (n=12) 9–13 (n=12)
not reported Packard (1960) 87–123 34–53 12–15 9–12
Texas Schmidly & Bradley (2016) 98 38 14.5 7–10 (avg 8)


Skull

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References

Armstrong DM, Fitzgerald JP, Meaney CA. 2010. Mammals of Colorado, Second Edition. Denver (CO, USA): University Press of Colorado.

Eshelman BD, Cameron GN. 1987. Baiomys taylori. Mammalian Species (285): 1-7.

Hoffmeister DF. 1986. Mammals of Arizona. Tucson (AZ, USA): University of Arizona Press.

Packard RL. 1960. Speciation and evolution of the pygmy mice, genus Baiomys (Doctoral dissertation, University of Kansas, Zoology).

Schmidly DJ, Bradley RD. 2016. The mammals of Texas. Austin (TX, USA): University of Texas Press.

True FW. 1894. On the relationships of Taylor's mouse Sitomys taylori. Proceedings of the U.S. National Museum 16:757-7.

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