Jul 5, 2022
From Prehistoric Animals, written/illustrated by William E. Scheele. 1954.
1.) Cheirolepis
2.) Holostean and Subholostean fish
3.) Leptolepis
4.) Portheus
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From Prehistoric Animals, written/illustrated by William E. Scheele. 1954.
1.) Cheirolepis
2.) Holostean and Subholostean fish
3.) Leptolepis
4.) Portheus
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Part of an unpublished project about prehistoric life, designed for children. The book contains 21 illustrations and several short activities.
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The hand fin, Cheirolepis (1835)
Phylum : Chordata Class : Actinopterygii Order : Cheirolepiformes Family : Cheirolepidae Genus : Cheirolepis Species : C. railli, C. canadensis, C. gaugeri, C. gracillis, C. sinualis
Late Devonian (380 Ma)
50 cm long (size)
Oceans worldwide (map)
There is no doubt that the Cheirolepis genus of fish were predators. The mouths of Cheirolepis could be opened particularly wide and were lined with numerous thin needle-like teeth for puncturing the bodies of other fish. The eyes of Cheirolepis were large and faced forwards indicating that Cheirolepis were visually orientated predators. The fins, particularly the pectorals that were on the underside of the body behind the head were well developed, further indicating a very active and fast swimming lifestyle. The wide geographic and temporal range of Cheirolepis indicates that as predators the genus were very successful.