Eotetrapodiformes
Sign in to saveEotetrapodiformes is an unranked clade of tetrapodomorphs including the four-limbed vertebrates ("tetrapods" in the traditional sense) and their closest finned relatives, two groups of stem tetrapods called tristichopterids and elpistostegalids.
Wikidata facts
- Instance of
- taxon
- Parent taxon
- Tetrapodomorpha
- Image
- Platycephalichthys.jpg
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Article
7 sectionsContents
- Description
- History
- Paleoecology
- Biogeography
- Evolution
- Ancestry
- References
Eotetrapodiformes is an unranked clade of tetrapodomorphs including the four-limbed vertebrates ("tetrapods" in the traditional sense) and their closest finned relatives, two groups of stem tetrapods called tristichopterids and elpistostegalids.
== Description == This clade is defined as "the node-based clade arising from the most recent common ancestor of Eusthenopteron and Ichthyostega plus all of its descendants," for their litany of shared morphological characteristics, such as similarities in their lower jaws and endocrania. Utilizing the holotype FMNH PF 610 of the sarcopterygian Litoptychus bryanti, paleontologists highlighted the division between the ethmoid and sphenoid processes, as well as vomeral and parasphenoid processes similar to those of more derived tetrapods. Eotetrapodiformes are considered a sister taxon to Megalichthyiformes and Rhizodontida.