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By Anica Debelica, Monte L. Thies

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Medulla (left) and cuticula (right) of Vulpes vulpes. Debelica and Thies—Atlas and Key of Terrestrial Texas Mammal Hair 37 Urocyon cinereoargenteus - Common Gray Fox (SHM 268) Medulla continuous, nodose type b, unordered, undisturbed, flattened “cells”, occupies more than 1/2 of shaft. Cuticula imbricate, flattened, with smooth scales. Midshaft dia. 140µm. Figure 53. Medulla (left) and cuticula (right) of Urocyon cinereoargenteus. Family Ursidae Ursus americanus - American Black Bear (uncataloged specimen, OSUCOV) Medulla continuous, nodose type a, flattened “cells”, occupies 1/3 to 1/2 of shaft.

20 19. Peromyscus gossypinus (Fig. Peromyscus leucopus (Fig. 132) 20. 21 21. Dipodomys spectabilis (Fig. Dipodomys elator (Fig. 116) 22. Oryzomys couesi (Fig. 23 23. Cratogeomys castanops (Fig. Dipodomys merriami (Fig. 117) 24. Medulla flattened (Fig. 25 Medulla mixed ovate and flattened (Fig. 55 Debelica and Thies—Atlas and Key of Terrestrial Texas Mammal Hair 61 25. Scales ovate (Fig. 26 Scales other than ovate (Fig. 28 26. Geomys texensis (Fig. 27 27. Peromyscus eremicus (Fig. Mus musculus (Fig.

Debelica and Thies—Atlas and Key of Terrestrial Texas Mammal Hair 41 Mustela vison - American Mink (SHM 925) Medulla continuous, nodose type a, fully vacuolated, occupies more than 1/2 of shaft. Cuticula imbricate, flattened, extremely close and wavy rows. Midshaft dia. 140μm. Figure 61. Medulla (left) and cuticula (right) of Mustela vison. Taxidea taxus - American Badger (SHM 677) Medulla continuous, homogeneous type a, vacuolated, occupies 1/3 of shaft. Cuticula imbricate, undefined, rows wavy when present.

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