Livoniana
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Extinct genus of tetrapodomorphs
| Livoniana Temporal range: Devonian
| |
|---|---|
| Scientific classification Edit this classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Clade: | Eotetrapodiformes |
| Clade: | Elpistostegalia |
| Genus: | †Livoniana |
| Species: | †L. multidentata
|
| Binomial name | |
| †Livoniana multidentata Ahlberg et al., 2000
| |
Livoniana is a genus of prehistoric tetrapodomorphs which lived during the Devonian period (Givetian - Frasnian stages, about 374 - 391 million years ago).[1]
This species is a transitional form between fish and the earliest tetrapods, like Tiktaalik , Ichthyostega and Acanthostega . Before Livoniana there was Elginerpeton and Obruchevichthys .
Four legs developed in water, not on land, to better escape waterliving predatory creatures like Hyneria . There were very lush forests, and particularly swamps, where four limbs became very useful to avoid predators.[2]
References
[edit ]- ^ Ahlberg, P. E.; Luksevics, E.; Mark-Kurik, E. (2000). "A near-tetrapod from the Baltic Middle Devonian". Palaeontology. 43 (3): 533–548. doi:10.1111/j.0031-0239.2000.00138.x .
- ^ "BBC - Science & Nature - Horizon - the Missing Link".
External links
[edit ]- Livoniana multidentata at Devonian Times
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