Dichotomous Key/Petromyzonidae

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

Parent key: Chordata Subphyla Vertebrata Key: Petromyzonidae Vertebrata Petromyzonidae

Glossary for this page (all links are to Wikipedia articles)
Dorsal fin: Caudal fin:

This is a Dichotomous Key for the Family Petromyzonidae.

1

• Dorsal and caudal fin distinction
  • The dorsal and caudal fins are distinct - Dichotomous Key:Petromyzon
  • The dorsal and caudal fins are not distinct - #2

2

• Depth of dorsal fin notch
  • Shallow - Dichotomous Key:Ichthyomyzon
  • Deep - Dichotomous Key:Lampetra