Johnlongia Explained

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]

Notes and References

  1. 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. 10.1660/0022-8443(2004)107[0131:TFROTL]2.0.CO;2. 3627901. 85790882 . 0022-8443.
  2. 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. 10.1080/02724634.2015.981335. 2015JVPal..35E1335S . 83793715. 0272-4634.

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