Rare Large Jaekelotodus trigonalis Fossil Tooth 1.4” – Extinct Sand Tiger Shark – Kazakhstan – Eocene — Up for sale is an impressive 1.4” (~3.6 cm) fossil tooth of Jaekelotodus trigonalis, an extinct lamniform shark traditionally placed among the sand-tiger-type sharks, from the banks of the Sarysu River in central Kazakhstan. According to the original locality label, this specimen dates to the Early–Middle Eocene, approximately 45–50 million years ago. Jaekelotodus is a particularly interesting Paleogene predatory shark characterized by robust triangular crowns and prominent lateral cusplets; scientific descriptions of J. trigonalis also document complete cutting edges, broad triangular primary cusplets and, in some tooth positions, smaller secondary cusplets. At 1.4 inches, this is a substantial and highly displayable example of an unusual Eocene shark, and the Central Kazakhstan locality adds significant collector appeal compared with the more routinely encountered Eocene shark material from western Europe and Morocco. J. trigonalis is a recognized Eocene lamniform taxon, although its precise family-level placement varies among references. The exact 1.4” fossil tooth shown in the listing photographs is the specimen you will receive, together with its original identification/locality label. An excellent addition for collectors specializing in rare lamniform sharks, Eocene predators, Kazakhstan fossils, and unusual worldwide shark localities.
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