List of life forms

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This article is about a thing that is living or alive. For The Future Sound of London album, see Lifeforms (album). For other uses, see Lifeform (disambiguation).

A life form or lifeform is an entity or being that is living or alive.[1][2] This is a list of articles that relate to physical, hypothetical, alleged, religious, or fictional life forms.

In process philosophy, objects in the world or universe are layered or tiered in complexity.[3] Living things are difficult to define,[4] but life forms can be considered to be the most complex entities in the arena or environment in which they exist.[5] As in process philosophy, this article brings together in a holistic manner life forms from the diverse human intuitions found in experiences that include the ethical, religious, philosophical, scientific, and aesthetic.[6]

Scientific, evolutionary categories[edit]




Organisms whose cells contain complex structures enclosed within membranes

Scientific, not evolutionary categories[edit]

Hypothetical life[edit]


Artificial and engineered[edit]

Origin of the universe and life[edit]

  • Abiogenesis, the transition from nonliving elements to living systems
  • Cosmogony, any theory concerning the origin of the universe
  • Cosmology, the study of the universe and humanity's place in it
  • Creation myth, a mytho-religious story or explanation that describes the beginnings of humanity, Earth, life, and the universe
  • Genesis creation narrative, creation as described in the first two chapters of the Book of Genesis in the Bible
  • Molecular evolution, evolution at the scale of molecules

Encounters with animate beings subject to skepticism[edit]

Animate beings subject to skepticism[edit]

Folklore, legendary, and mythological[edit]

Religious, spiritual, occult, and philosophical[edit]


Qualities, attributes, and terms[edit]


See also[edit]


  1. ^ "life form". World English Dictionary. 2009. 
  2. ^ "life form". Online Oxford Dictionary of English. Oxford University Press. 2005. 
  3. ^ Jeremy R. Hustwit (2007). "Process Philosophy". Internet Encyclopedia of Philosophy. p. 3.d. Rejection of Nominalism. 
  4. ^ Mark A. Bedau (1998). "Four Puzzles about Life". Reed College. 
  5. ^ Harinder S. Sandhu (2010). "Scientific - Origin of the Universe". 
  6. ^ Jeremy R. Hustwit (2007). "Process Philosophy". Internet Encyclopedia of Philosophy. p. 2.a. In Pursuit of a Holistic Worldview.