TY - JOUR
TI - The inner morphology of the petrosal bone of the endemic elephant of tilos island, greece
AU - Liakopoulou, D.E.
AU - Theodorou, G.E.
AU - van Heteren, A.H.
JO - Palaeontologia Electronica
PY - 2021
VL - 24
TODO - 2
SP - null
PB - Texas A and M University
SN - 1094-8074
TODO - 10.26879/1034
TODO - bone;  elephant;  endemic species;  frequency analysis;  morphology;  paleontology, Greece, elephant;  Mammalia;  Palaeoloxodon
TODO - The bony labyrinth, as part of the inner structure of the petrosal bone, contains the sensory organs of balance and hearing. The semicircular canals, as part of the vestib-ular apparatus of the inner ear, are involved in the detection of angular motion of the head for maintaining balance and guiding locomotor behavior. While the overall structure of the bony labyrinth is inaccessible embedded in the petrosal bone, high resolu-tion computed tomography makes the study of these structures possible. The purpose of this study is to visualize and precisely quantify the complex inner ear structures of the insular mammal Palaeoloxodon tiliensis and comment on the relationship of these morphologies to the agility and hearing frequency ranges. This study focuses on imaging the shape of the bony labyrinth as well as the semicircular canals, of three petrosal bones, using micro-computed tomography (micro-CT). Shape and size analysis of the cochlea allow for an assessment of morphological differences between species. Spe-cifically, measuring the dimensions of inner ear components as well as the angular dis-tances can express the variation in their balancing abilities and the frequencies of their auditory perception. The morphological characteristics obtained through micro-CT lead to the conclusion that P. tiliensis retained similar conditions to that of its larger relatives, and it was an animal that had hearing in the low frequency ranges. © June 2021 Society of Vertebrate Paleontology.
ER -