Pseudobolodon_ear_region_Istack

CT-image stack of the vestibule of Pseudobolodon oreas (specimen Gui Mam 77). For settings and resolution of the scan please see README.pdf file

suppl01_dataset bony labyrinth_Pfaff ETAL

Raw data and measurements of the investigated specimen

Pseudobolodon_GuiMam77_stapes_incus_malleus_frags

3D surface model of the middle ear ossicles of Pseudobolodon oreas created with software Avizo 8 (STL-file)

Table S1. Studied fossil and extant Lagomorpha from Auditory region circulation in Lagomorpha: the internal carotid artery pattern revisited

Contains detailed information on species sample and scan parameter

suppl02_taxa scan information

Information of the investigated specimens and the respective CT scan

Pseudobolodon_GuiMam77_stapes_incus_malleus_frags

3D surface model of the middle ear ossicles of Pseudobolodon oreas created with software Avizo 8 (STL-file)

Supporting Information to Schultz, Ruf & Martin - Pseudobolodon_ESM from Oldest known multituberculate stapes suggests an asymmetric bicrural pattern as ancestral for Multituberculata

Electronic supplementary materia

Modular Wear Facet Nomenclature for mammalian post-canine dentitions

<p>Dental wear facets on the occlusal surface of premolars and molars are traces of their main function, the mastication and therefore reflect masticatory movements and also paramasticatory (i.e. non-dietary use of teeth) behavior. Here we present the Modular Wear Facet Nomenclature applicable to most mammalian dentitions. Topographic positions of wear facets in relation to the major cusps and crests of the teeth are used to designate the areas of the occlusal surface the facets occupy (e.g. their mesial, distal, lingual, or buccal position). Previous published systems for labeling wear facets have been inconsistent with each other. Therefore, we provide a synoptic review of the most widely-used terminologies, and introduce the alternative Modular Wear Facet Nomenclature. This nomenclature aims to overcome the difficulties caused by the existing inconsistent wear facet terminologies. Our new approach is applicable to dentitions where the occlusal morphology does not change significantly for most of the lifetime of the animal. In those dentitions, the primary occlusal surfaces are not significantly modified as wear facets become more extensive with wearing. This appears to be a common pattern in pre-tribosphenic, tribosphenic molars, and the teeth derived from tribosphenic precursors (e.g. bunodont molar morphologies). In teeth where the secondary occlusal surface is functionally intensely modified (i.e. high-crowned and evergrowing teeth with large areas of dentine exposed) any facet labeling system appears to be challenging, since the identification of individual facets is blurred and their spatial position may be indeterminable.</p