Special Issue "Bone Morphology in Paleontology and Evolution Research"

A special issue of Animals (ISSN 2076-2615).

Deadline for manuscript submissions: 31 December 2021.

Special Issue Editor

Prof. Dr. Marco Zedda
E-Mail Website
Guest Editor
Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy
Interests: reproduction; fertility; spermatozoa; cryopreservation; artificial insemination; MOET, oocyte; embryo production

Special Issue Information

Dear Colleagues,

Until a few decades ago, the morphological study of the bones of animals that lived in the past almost exclusively aimed to highlight useful characteristics for the recognition of species. Moreover, a close correlation between bone morphology and mechanical stress induced by the environment was identified and exploited to reconstruct the individual animal's lifestyle. Research on bone morphology is also fundamental to the study of allometry and skeletal development in the evolutionary field. Furthermore, over the last few decades, microscopic observations of thin bone sections have broadened horizons and allowed us to acquire more data on locomotor habits and the conducted lifestyle. One of the most interesting aspects of the macroscopic and microscopic morphological characteristics of ancient animal bones is that their study can be used to research and establish phylogenetic relationships between taxa. From this point of view, paleoanatomy and paleohistology acquire great importance in the comparative anatomy and paleontological field, as they provide useful tools for understanding evolutionary processes and achieving results that even paleogenetics cannot provide, leading to a sort of revenge of the morphological sciences on the biomolecular ones. You are invited to submit your work on these topics. In particular, we welcome histomorphometric studies on osteons, the relief of growth arrest lines, and the calculation of skeletal chronology as well as all other original studies of extinct animals that evaluate possible correlations between bone morphology and evolution.

Prof. Dr. Marco Zedda
Guest Editor

Manuscript Submission Information

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Keywords

  • bone morphology
  • bone histology
  • paleontology.

Published Papers (1 paper)

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Research

Article
A Model for Dental Age Verification Using Ultrastructural Imaging for Modern and Fossil Representatives of the Rhinocerotidae Family
Animals 2021, 11(3), 910; https://doi.org/10.3390/ani11030910 - 22 Mar 2021
Viewed by 724
Abstract
The analyses were performed on a right third premolar (P3) of a white rhinoceros female (Ceratotherium simum, Burchell 1817). The specimen was born in captivity at London Zoo (Zoological Society of London), then in the 1970s transferred to Kiev [...] Read more.
The analyses were performed on a right third premolar (P3) of a white rhinoceros female (Ceratotherium simum, Burchell 1817). The specimen was born in captivity at London Zoo (Zoological Society of London), then in the 1970s transferred to Kiev Zoo (Peremohy Avenue), Ukraine, and was kept there until it died at a documented chronological age of 48 years. The female died because of its age, which indicates it was kept in good conditions adequate to the requirements of this species. Photographs and micrographs with radiological documentation were taken on the said tooth. Its structural characteristics were determined, and on the occlusal surface areas and points of anatomical constitution of its crown were identified. The tooth was also histologically evaluated via sections taken horizontally in a mesial-distal plane through the crown, horizontally in a mesial-distal plane through the coronal portion of the root, and longitudinally in a lingual-buccal plane through the crown and the root. Preparations with ground sections were made and observed in white, polarized, and reflected light. In the subsequent stage X-ray and SEM imaging has also been used, for analysis of the distribution of annual growth layers of mineralized dental tissues of cement and dentine, counted from the root canal center to the buccal surface. An attempt was also made to confirm the annual season in which the animal died, based on cement growth lines. It was observed that the growth lines were visible in all the analyzed sections, in dentine and cement. In the cement, the lines were relatively few and did not represent the attested age of the animal. The analysis of the coloration of the cement lines indicated that the animal was regularly fed a diet that was not seasonally differentiated. From the X-ray examination comes a conclusion that the animal did not suffer from periodontal diseases. Visible growth lines were observed on the dentine. On the horizontal section through the crown growth lines in the dentine were few and unclear. On the longitudinal section, both on the caudal and rostral roots, these lines were clearly visible and much more numerous than expected considering the known age of the animal, as more than 50 were counted. On horizontal sections through the upper part of both roots, distinct growth lines were observed in the dentine, and their number—48 for both roots—corresponded precisely to the age of the animal. The results of our study indicate that this method has significant potential for application to verify the age at death for modern and fossil representatives of rhinoceros. Full article
(This article belongs to the Special Issue Bone Morphology in Paleontology and Evolution Research)
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