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Ventastega information


Ventastega
Temporal range: 376.1–360.7 Ma[1]
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
 Famennian (Late Devonian)
An artist's depiction of Ventastega curonica chasing prey.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Sarcopterygii
Clade: Tetrapodomorpha
Clade: Stegocephali
Genus: †Ventastega
Ahlberg, P.E, Clack, J.A, Lukševičs, E., Zupiņš, I. 1994
Species
  • †V. curonica

Ventastega (Venta referring to the Venta River at the Ketleri Formation where Ventastega was discovered[2]) is an extinct genus of stem tetrapod that lived during the Upper Fammenian of the Late Devonian, approximately 372.2 to 358.9 million years ago.[2] Only one species is known that belongs in the genus, Ventastega curonica, which was described in 1996 after fossils were discovered in 1933 and mistakenly associated with a fish called Polyplocodus wenjukovi.[2] ‘Curonica’ in the species name refers to Curonia, the Latin name for Kurzeme, a region in western Latvia.[2] Ventastega curonica was discovered in two localities in Latvia, and was the first stem tetrapod described in Latvia along with being only the 4th Devonian tetrapodomorph known at the time of description.[2] Based on the morphology of both cranial and post-cranial elements discovered (see below), Ventastega is more primitive than other Devonian tetrapodomorphs including Acanthostega and Ichthyostega,[3][2] and helps further understanding of the fish-tetrapod transition.

  1. ^ "†Ventastega Ahlberg et al. 1994". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
  2. ^ a b c d e f Ahlberg, Per Erik; Luksevics, Ervins; Lebedev, Oleg (1994-02-28). "The First Tetrapod Finds from the Devonian (Upper Famennian) of Latvia". Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 343 (1305): 303–328. doi:10.1098/rstb.1994.0027. ISSN 0962-8436.
  3. ^ Ahlberg, Per E.; Clack, Jennifer A.; Lukševičs, Ervīns; Blom, Henning; Zupiņš, Ivars (June 2008). "Ventastega curonica and the origin of tetrapod morphology". Nature. 453 (7199): 1199–1204. Bibcode:2008Natur.453.1199A. doi:10.1038/nature06991. ISSN 0028-0836. PMID 18580942. S2CID 4344417.

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Ventastega

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Stegocephali

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Rhizodontida

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Panderichthys

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Lepospondyli

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Ciecere River

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Hyneria

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Rachitomi

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