Εξαιρετικά μεγάλο δόντι μεγαλοσαυρίδης cf Afrovenator Θροποδικός δεινόσαυρος - Μέσο Ιουρασικό - Απολιθωμένο δόντι





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Επιστημονικό όνομα: Δόντι Θηροποδινού Δεινοσαύρου – Μεγαλόσαυριν cf Afrovenator abakensis; Δείγμα: Outstanding Huge Megalosaurid cf Afrovenator Theropod Dinosaur Tooth - Middle Jurassic; Γεωλογική περίοδος: Μεσαίος Ιουράς, Bathonian (167 εκατομμύρια χρόνια πριν); Κατάσταση: Φυσικό/Φυσικό κατάσταση; Αυθεντικότητα: Original/official.
Περιγραφή από τον πωλητή
Scientific name: Theropod Dinosaur Tooth - Megalosaurid cf Afrovenator abakensis
Location: Tiouraren Hill, Téneré Desert, Niger.
Geological Formation: Tiouraren Fm
Age: Middle Jurassic, Bathonian stage ( 167 million years)
Size: 6,3cm
REF.: #J678
DESCRIPTION:
Outstanding huge megalosaurid dinosaur tooth. The specimen have few glued and filled gap fractures on one side. Its anyway a truly outstanding large tooth.
All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included.
Although an isolated tooth may be morphologically compatible with Afrovenator, assigning an isolated crown confidently to Afrovenator—and particularly to the species Afrovenator abakensis—requires considerable caution.
Theropod teeth are relatively simple anatomical structures, and many unrelated predatory dinosaurs independently developed similar laterally compressed, recurved and serrated crowns. This phenomenon of dental homoplasy means that superficially similar tooth morphologies can occur in distantly related theropod lineages. Modern studies therefore emphasize that isolated theropod teeth are frequently much easier to identify at a broad family or morphotype level than at genus or species level.
A further complication is heterodonty within a single animal. Tooth morphology can change considerably along the premaxillary, maxillary and dentary tooth rows. Crown curvature, basal cross-section, labiolingual compression, carinal position, serration density and even the development of particular enamel features may vary according to tooth position. Consequently, two teeth belonging to the same individual can sometimes appear surprisingly different.
Ontogenetic variation, individual variation, tooth wear, incomplete preservation, erosion of the enamel and denticles, and deformation during fossilization introduce additional uncertainty. Measurements such as crown height, crown base length, crown base width, crown base ratio, curvature, mesial and distal denticle density, and the relative development of the carinae are therefore considerably more informative when evaluated together than any single morphological feature. Quantitative and multivariate approaches have consequently become important tools for assessing isolated theropod teeth.
For this reason, an isolated tooth from the Tiourarén Formation possessing the expected morphology should preferably be described as “cf. Afrovenator,” “Afrovenator-like,” or “theropod tooth morphologically consistent with Afrovenator” unless diagnostic comparisons and strong stratigraphic and locality data provide sufficient evidence for a more precise attribution.
An assignment specifically to Afrovenator abakensis should therefore be considered a taxonomic interpretation rather than an absolute identification when the specimen consists solely of an isolated tooth. Associated cranial or skeletal material provides a substantially stronger basis for species-level identification than dental morphology alone.
Ιστορία πωλητή
Scientific name: Theropod Dinosaur Tooth - Megalosaurid cf Afrovenator abakensis
Location: Tiouraren Hill, Téneré Desert, Niger.
Geological Formation: Tiouraren Fm
Age: Middle Jurassic, Bathonian stage ( 167 million years)
Size: 6,3cm
REF.: #J678
DESCRIPTION:
Outstanding huge megalosaurid dinosaur tooth. The specimen have few glued and filled gap fractures on one side. Its anyway a truly outstanding large tooth.
All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included.
Although an isolated tooth may be morphologically compatible with Afrovenator, assigning an isolated crown confidently to Afrovenator—and particularly to the species Afrovenator abakensis—requires considerable caution.
Theropod teeth are relatively simple anatomical structures, and many unrelated predatory dinosaurs independently developed similar laterally compressed, recurved and serrated crowns. This phenomenon of dental homoplasy means that superficially similar tooth morphologies can occur in distantly related theropod lineages. Modern studies therefore emphasize that isolated theropod teeth are frequently much easier to identify at a broad family or morphotype level than at genus or species level.
A further complication is heterodonty within a single animal. Tooth morphology can change considerably along the premaxillary, maxillary and dentary tooth rows. Crown curvature, basal cross-section, labiolingual compression, carinal position, serration density and even the development of particular enamel features may vary according to tooth position. Consequently, two teeth belonging to the same individual can sometimes appear surprisingly different.
Ontogenetic variation, individual variation, tooth wear, incomplete preservation, erosion of the enamel and denticles, and deformation during fossilization introduce additional uncertainty. Measurements such as crown height, crown base length, crown base width, crown base ratio, curvature, mesial and distal denticle density, and the relative development of the carinae are therefore considerably more informative when evaluated together than any single morphological feature. Quantitative and multivariate approaches have consequently become important tools for assessing isolated theropod teeth.
For this reason, an isolated tooth from the Tiourarén Formation possessing the expected morphology should preferably be described as “cf. Afrovenator,” “Afrovenator-like,” or “theropod tooth morphologically consistent with Afrovenator” unless diagnostic comparisons and strong stratigraphic and locality data provide sufficient evidence for a more precise attribution.
An assignment specifically to Afrovenator abakensis should therefore be considered a taxonomic interpretation rather than an absolute identification when the specimen consists solely of an isolated tooth. Associated cranial or skeletal material provides a substantially stronger basis for species-level identification than dental morphology alone.

