Unit:
Τομέας Ιστορικής Γεωλογίας και ΠαλαιοντολογίαςLibrary of the School of Science
Author:
Μητσοπούλου Βασιλική
Supervisors info:
Γεώργιος Θεοδώρου (Επιβλέπων Καθηγητής),Παρίσις Παυλάκης (Αναπληρωτής Καθηγητής), Ρουσιάκης Σωκράτης (Λέκτορας)
Original Title:
Βιομετρικές παρατηρήσεις άνω και κάτω γνάθων των Άνω Μειοκαινικών Ιππαρίων Πικερμίου Αττικής
Translated title:
Biometrical observations on the dentition of Upper Miocene hippartionine horses from Pikermi Attica
Summary:
The objective of this thesis is the study of Upper Miocene hipparionine horses
from Pikermi Attica. The samples consist of specimens from the classical
locality and the new site named Pikermi Valley-1 (PV1) which are stored at the
Museum of Palaeontology and Geology. The taxonomic determination of the species
was based on the procedure suggested in the International symposium held at New
York. Two different species were recognized, Hipparion mediterraneum and
Hipparion brachypus. The mandible of Hipparion mediterraneum is characterized
by the following features: small cheek row lenght, simple enamel plication,
rarely present small protostylid, and simple pli caballinid. Furthermore, the
maxilla has small cheek row length, simple to moderate enamel plication with
plis rounded and shallow, and simple pli caballin. On the contrary, the
mandible of Hipparion brachypus is characterized by rich enamel plication, with
borders of the flexids crenelated and plicated, pli caballinid is rare but when
appeared is single or triple. Additionally, the upper cheek teeth has long
cheek teeth length, rich enamel plication with narrow and deep plis, and small
pli caballin with 1-3 plis. Furhtermore scull measurements define biometrical
differences of the two species. The first species in correlation with the
second, which is more robust, demonstrated small preorbital bar, small muzzle
breadth, and small distance between incisors and P2. In conclusion, the
statistical analyses combined with mormometric observations indicated the
appearance of the two species at the localities of Pikermi.
Keywords:
Μiocene, Hipparionine, Biometry, Morphometry, Dentition
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