Palaeocarcharias
| Palaeocarcharias Temporal range: Middle-Late Jurassic
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| Specimens of P. stromeri from the Upper Jurassic of Germany | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Subdivision: | Selachimorpha |
| Order: | Lamniformes (?) |
| Genus: | †Palaeocarcharias Beaumont, 1960 |
Palaeocarcharias is an extinct genus of shark, known from the Middle-Late Jurassic of Europe. It has only a single named species, P. stromeri, which is known from exceptionally preserved specimens from the Late Jurassic (Tithonian) of Germany. Morphologically, it closely resembles carpet sharks (Orectolobiformes),[1] and is around 1 metre (3.3 ft) in total body length.[2] However, it shares greater similarities in tooth development with mackerel sharks (Lamniformes), including the absence of orthodentine, and is now considered to be the earliest known member of the Lamniformes.[1]
References
- ^ a b Jambura, Patrick L.; Kindlimann, René; López-Romero, Faviel; Marramà, Giuseppe; Pfaff, Cathrin; Stumpf, Sebastian; Türtscher, Julia; Underwood, Charlie J.; Ward, David J.; Kriwet, Jürgen (2019-07-04). "Micro-computed tomography imaging reveals the development of a unique tooth mineralization pattern in mackerel sharks (Chondrichthyes; Lamniformes) in deep time". Scientific Reports. 9 (1): 9652. doi:10.1038/s41598-019-46081-3. ISSN 2045-2322. PMC 6609643. PMID 31273249.
- ^ Shimada, Kenshu; Becker, Martin A.; Griffiths, Michael L. (2021-11-02). "Body, jaw, and dentition lengths of macrophagous lamniform sharks, and body size evolution in Lamniformes with special reference to 'off-the-scale' gigantism of the megatooth shark, Otodus megalodon". Historical Biology. 33 (11): 2543–2559. doi:10.1080/08912963.2020.1812598. ISSN 0891-2963. S2CID 224935604.