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. A complete morphological description, as preservation permits, is providedfor a new Late Jurassic fish species (Tharsis elleri) together witha revision and comparison of some morphological features of Tharsis dubius, one of the most common species from the Solnhofen limestone,southern Germany. An emended diagnosis of the genus Tharsis – nowincluding two species – is presented. The new species is characterized by acombination of morphological characters, such as the presence of a completesclerotic ring formed by two bones placed anterior and posterior to the eye,a moderately short lower jaw with quadrate-mandibular articulation below theanterior half of the orbit, caudal vertebrae with neural and haemal archesfused to their respective vertebral centrum, and parapophyses fused to theirrespective centrum. A phylogenetic analysis based on 198 characters and43 taxa is performed. Following the phylogenetic hypothesis, the sister-grouprelationship Ascalaboidae plus more advanced teleosts stands above the nodeof Leptolepis coryphaenoides. Both nodes have strong support among teleosts. The resultsconfirm the inclusion of Ascalabos, Ebertichthys andTharsis as members of this extinct family. Tharsis ellerin. sp. (LSID urn:lsid:zoobank.org:act:6434E6F5-2DDD-48CF-A2B1-827495FE46E6,date: 13 December 2018) is so far restricted to one Upper Jurassic Germanlocality – Wegscheid Quarry near Schernfeld, Eichstatt – whereasTharsis dubius is known not only from Wegscheid Quarry, but alsofrom different localities in the Upper Jurassic of Bavaria, Germany, andCerin in France.

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On a remarkable new species of &amp;lt;i&amp;gt;Tharsis&amp;lt;/i&amp;gt;, a Late Jurassic teleostean fish from southern Germany: its morphology and phylogenetic relationships