Johnlongia is an extinct genus of sand shark from the Cretaceous period. It contains two described species, J. parvidens and J. allocotodon, and possibly a third unnamed species from the Niobrara Chalk.[1] It is presumed piscivorous; however, it forms a clade with an early filter-feeding shark genus, Pseudomegachasma.[2]
| Johnlongia | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Lamniformes |
| Family: | Odontaspididae |
| Subfamily: | †Johnlonginae |
| Genus: | †Johnlongia Siverson, 1996 |
| Species | |
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References
edit- ^ Shimada, Kenshu; Ewell, Keith; Everhart, Michael J. (2004). "The First Record of the Lamniform Shark Genus, Johnlongia, from the Niobrara Chalk (Upper Cretaceous), Western Kansas". Transactions of the Kansas Academy of Science. 107 (3/4): 131–135. doi:10.1660/0022-8443(2004)107[0131:TFROTL]2.0.CO;2. ISSN 0022-8443. JSTOR 3627901. S2CID 85790882.
- ^ Shimada, Kenshu; Popov, Evgeny V.; Siversson, Mikael; Welton, Bruce J.; Long, Douglas J. (2015-09-03). "A new clade of putative plankton-feeding sharks from the Upper Cretaceous of Russia and the United States". Journal of Vertebrate Paleontology. 35 (5): e981335. Bibcode:2015JVPal..35E1335S. doi:10.1080/02724634.2015.981335. ISSN 0272-4634. S2CID 83793715.
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