Dichotomous Key/Actinopterygii

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Dichotomous Key: Selachimorpha Kingdom: Animalia Phylum: Animalia Subphylum: Chordata Class: Selachimorpha Information related to Selachimorpha Wikipedia Wikispecies Wikicommons

Parent key: Chordata Subphyla Vertebrata Key: Selachimorpha Vertebrata Actinopterygii

[edit] 1

• Spiracles
  • Present - Chondrostei
  • Either only remnants present or spiracles absent - #2

[edit] 2

• Spiracles
  • Remnants present - Holostei
  • Absent - Teleostei