Ischnacanthiformes

Ischnacanthiformes
Temporal range: 418–409 Ma
Ishnacanthus gracilis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Class: Acanthodii (J. A. Long 2011)
Order: Ischnacanthiformes
Families
  • Ischnacanthidae
  • Poracanthidae
  • Xylacanthus

Ischanacanthiformes is an order of Acanthodii or spiny sharks found in the Ukraine and United Kingdom. Members of this order were nektonic carnivores,[1] eating animals that swim rather than plankton. They had slender builds, light armor, deeply inserted spines, and two dorsal fins.[2] It was described by Berg in 1940.[3][4]

References

  1. ↑ McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
  2. ↑ McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
  3. ↑ "†order Ischnacanthiformes Berg 1940 (spiny fish)". Fossilworks. Retrieved 11 January 2014.
  4. ↑ Burrow, Carole. Acanthodians with dentigerous jaws: the Ischnacanthiformes and Acanthodopsis. Department of Zoology and Entomology, University of Queensland.
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