1. (biology) an artificial taxonomic category for organisms of which the true relationships are obscure 
2. An artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms

Derived forms: form genera

Type of: genus

Encyclopedia: Form genus

• 49th
• 4th
• 4to
• 4WD
• 5
• 5-hitter
• 5-hydroxy-3-methylglutaryl-coenzyme A reductase
• 5-hydroxytryptamine
• 5-membered
• 50
• 500
• 500th
• 50th
• 51
• 52
• 53
• 54
• 55
• 55th
• 56
• 57
• 58
• 59
• 5th
• 6