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- Hunter-Schreger_band abstract "Hunter-Schreger bands, commonly abbreviated as HSB, are features of the enamel of the teeth in mammals, mostly placentals. In HSB, enamel prisms are arranged in layers of varying thickness at about right angles to each other. HSB strengthen the enamel and prevent cracks from propagating through the tooth.HSB are first observed in early Paleocene mammals, but at this time the HSB occupy only a small portion of the incisor and the angle between the bands is low. By the late Paleocene, HSB is seen to extend throughout the enamel and the bands are located at nearly right angles to each other.Under oblique reflected light HSB can be seen as dark and light strips of variable width.Among Glires, the group containing rodents, lagomorphs, and their primitive relatives, the absence of HSB from the incisors has been considered primitive. Some early representatives, including Eurymylus, lack HSB, but others, including Matutinia and some mimotonids, have double-layered incisor enamel with HSB in the inner portion (portio interna, PI). Other mimotonids have single-layered enamel with HSB. All leporids studied also exhibit this pattern, except for an early Eocene, indeterminate leporid with HSB only in the PI. Ochotonids also have HSB in the PI only.In rodents, HSB are usually present in the PI. Three types of HSB can be separated—pauciserial, uniserial, and multiserial. Pauciserial HSB, present in some primitive Paleogene rodents, are usually three to six prisms thick and have inter-prismatic matrix (IPM) surrounding the prisms, which have irregular cross-sections. Uniserial HSB, present in most living rodents, consist of a single layer of prisms. Multiserial HSB, three to seven prisms thick, characterize the living Hystricognathi and the gundis (Ctenodactylidae) and springhares (Pedetes). There are three subtypes on the basis of the orientation of the IPM. In the first, the IPM runs mostly parallel to the HSB, but does not surround it as in pauciserial enamel; in the second, the IPM makes an angle of about 45° with the HSB; and in the third, the two are located at right angles to each other. The last type serves to further strengthen the enamel and is characteristic of the Octodontoidea.Among carnivorans, the hyenas exhibit specialized HSB, which form a complex, three-dimensional zigzag pattern, a specialization for bone-eating.".
- Hunter-Schreger_band wikiPageExternalLink BF01464364.
- Hunter-Schreger_band wikiPageExternalLink j.mambio.2006.10.011.
- Hunter-Schreger_band wikiPageExternalLink 2513.
- Hunter-Schreger_band wikiPageID "25848756".
- Hunter-Schreger_band wikiPageLength "4043".
- Hunter-Schreger_band wikiPageOutDegree "25".
- Hunter-Schreger_band wikiPageRevisionID "637050540".
- Hunter-Schreger_band wikiPageWikiLink Carnivora.
- Hunter-Schreger_band wikiPageWikiLink Category:Mammal_anatomy.
- Hunter-Schreger_band wikiPageWikiLink Enamel_prism.
- Hunter-Schreger_band wikiPageWikiLink Eocene.
- Hunter-Schreger_band wikiPageWikiLink Eurymylus.
- Hunter-Schreger_band wikiPageWikiLink Glires.
- Hunter-Schreger_band wikiPageWikiLink Gundi.
- Hunter-Schreger_band wikiPageWikiLink Hyena.
- Hunter-Schreger_band wikiPageWikiLink Hystricognathi.
- Hunter-Schreger_band wikiPageWikiLink Incisor.
- Hunter-Schreger_band wikiPageWikiLink Inter-prismatic_matrix.
- Hunter-Schreger_band wikiPageWikiLink Lagomorpha.
- Hunter-Schreger_band wikiPageWikiLink Leporidae.
- Hunter-Schreger_band wikiPageWikiLink Mammal.
- Hunter-Schreger_band wikiPageWikiLink Matutinia.
- Hunter-Schreger_band wikiPageWikiLink Mimotonidae.
- Hunter-Schreger_band wikiPageWikiLink Ochotonidae.
- Hunter-Schreger_band wikiPageWikiLink Octodontoidea.
- Hunter-Schreger_band wikiPageWikiLink Paleocene.
- Hunter-Schreger_band wikiPageWikiLink Paleogene.
- Hunter-Schreger_band wikiPageWikiLink Pedetes.
- Hunter-Schreger_band wikiPageWikiLink Pika.
- Hunter-Schreger_band wikiPageWikiLink Placental.
- Hunter-Schreger_band wikiPageWikiLink Placentalia.
- Hunter-Schreger_band wikiPageWikiLink Rodent.
- Hunter-Schreger_band wikiPageWikiLink Springhare.
- Hunter-Schreger_band wikiPageWikiLink Tooth.
- Hunter-Schreger_band wikiPageWikiLink Tooth_enamel.
- Hunter-Schreger_band wikiPageWikiLinkText "Hunter-Schreger band".
- Hunter-Schreger_band hasPhotoCollection Hunter-Schreger_band.
- Hunter-Schreger_band wikiPageUsesTemplate Template:Reflist.
- Hunter-Schreger_band subject Category:Mammal_anatomy.
- Hunter-Schreger_band hypernym Features.
- Hunter-Schreger_band type Building.
- Hunter-Schreger_band type Mammal.
- Hunter-Schreger_band type Mammal.
- Hunter-Schreger_band comment "Hunter-Schreger bands, commonly abbreviated as HSB, are features of the enamel of the teeth in mammals, mostly placentals. In HSB, enamel prisms are arranged in layers of varying thickness at about right angles to each other. HSB strengthen the enamel and prevent cracks from propagating through the tooth.HSB are first observed in early Paleocene mammals, but at this time the HSB occupy only a small portion of the incisor and the angle between the bands is low.".
- Hunter-Schreger_band label "Hunter-Schreger band".
- Hunter-Schreger_band sameAs m.09v9fr9.
- Hunter-Schreger_band sameAs Q5944182.
- Hunter-Schreger_band sameAs Q5944182.
- Hunter-Schreger_band wasDerivedFrom Hunter-Schreger_band?oldid=637050540.
- Hunter-Schreger_band isPrimaryTopicOf Hunter-Schreger_band.