Bonnerichthys
| Bonnerichthys Temporal range: Late Cretaceous, 87–81 Ma | |
|---|---|
 | |
| Restoration | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Pachycormiformes |
| Family: | †Pachycormidae |
| Genus: | †Bonnerichthys Friedman et al., 2010 |
| Species: | † B. gladius |
| Binomial name | |
| Bonnerichthys gladius (Cope, 1873) | |
| Synonyms | |
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Bonnerichthys is a genus of fossil fishes within the family Pachycormidae that lived during the Late Cretaceous Period [1] Fossil remains of this taxon are known from the Smoky Hill Member of the Niobrara Chalk Formation of Kansas (Late Coniacian-Early Campanian, about 87-81 million years ago). It grew to around 20 feet in length, though not quite as large as the related Leedsichthys from the Jurassic of Europe which likely grew up to 30 feet.[2]
Feeding
One of the most significant features of Bonnerichthys is the recognition that it was a filter feeder, living on plankton. This recognition that many large-bodied fish from the Mesozoic in the Pachycormidae were filter feeders shows that this niche was filled for at least 100 million years before previously known. The modern niche is filled by several species of sharks and the baleen whales.
References
- ↑ FRIEDMAN, M., K. SHIMADA, L. MARTIN, M. J. EVERHART, J. LISTON, A. MALTESE, AND M. TRIEBOLD. 2010. 100-million-year dynasty of giant planktivorous bony fishes in the Mesozoic seas. Science, 327:990-993.
- ↑ Viegas, Jennifer (18 February 2010), SUV-Sized Fish Were Earliest Filter-Feeders, Discovery News, retrieved 1 April 2010
External links
- Bonnerichthys at the Oceans of Kansas website. Includes detailed taxonomic history, life restorations, bibliography, many photos of fossil remains.
- Bonnerichthys discussion at boneblogger.com