Chomatodus

Chomatodus (from Greek: χωμα choma, 'mound' and Greek: ὀδούς odoús 'tooth') is an extinct genus of cartilaginous fish belonging to the family Petalodontidae. 

 Species 

 †Chomatodus affinis Newberry & Worthen, 1866
 †Chomatodus angulatus Newberry & Worthen, 1866
 †Chomatodus angustus Newberry, 1879
 †Chomatodus arcuatus St. John, 1870
 †Chomatodus chesterensis St. John & Worthen, 1875
 †Chomatodus comptus St. John & Worthen, 1875
 †Chomatodus costatus Newberry & Worthen, 1866
 †Chomatodus cultellus Anonymous author(s)
 †Chomatodus davisi Woodward, 1889
 †Chomatodus dentatus Anonymous author(s)
 †Chomatodus elegans Newberry & Worthen, 1866
 †Chomatodus gracillimus Newberry & Worthen, 1866
 †Chomatodus inconstans St. John & Worthen, 1875
 †Chomatodus incrassatus Anonymous author(s)
 †Chomatodus insignis Leidy, 1857
 †Chomatodus lamelliformis Davis, 1884
 †Chomatodus lanesvillensis Anonymous author(s)
 †Chomatodus linearis Agassiz, 1843
 †Chomatodus loriformis Anonymous author(s)
 †Chomatodus molaris Newberry & Worthen, 1866
 †Chomatodus newberryi Anonymous author(s)
 †Chomatodus parallelus Anonymous author(s)
 †Chomatodus piasaensis Anonymous author(s)
 †Chomatodus ponticulus Anonymous author(s)
 †Chomatodus pusillus Newberry & Worthen, 1866
 †Chomatodus selliformis Anonymous author(s)
 †Chomatodus varsouviensis Anonymous author(s)

There is no type species.

 Description 
We don't know what it looks like. Some people draw it as a slender shark. Others mistake it for a perciform fish. So far, people have found teeth and tooth fossils instead of complete fossils.

 References 

 ^ Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 30. Retrieved 29 December 2021.
 ^ "Paleontology Of Illinois. p.86". Archived from the original on 2016-03-04. Retrieved 2015-09-07.
 ^ Bibliography and Catalogue of the Fossil Vertebrata of North America, Number 179. Oliver Perry Hay at Google Books

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 Helicoprion

Category:Cartilaginous fish