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'''''Congosaurus''''' is an extinct [[genus]] of [[Dyrosauridae| dyrosaurid]] [[Mesoeucrocodylia|mesoeucrocodylian]]. [[Fossil|Fossils]] have been found from [[Angola]] and date back to the [[Paleocene]] epoch. In 1952 and 1964 ''Congosaurus'' was proposed to be [[Synonym (taxonomy)|synonymous]] with ''[[Dyrosaurus]]''<ref>Arambourg, C. (1952). Les vertébrés fossiles des gisements de phosphates (Maroc, Algérie, Tunisie). ''Notes et Mémoires du Service géologique du Maroc'' '''92''':372.</ref><ref>Antunes, M. T. (1964). O neocretácico e o cenozóico do litoral de Angola. ''Junta de Investigações do Ultramar, Lisboa'', 254 pp.</ref>. The genus was later regarded to be synonymous with ''[[Hyposaurus]]'' in 1976 and 1980<ref>Buffetaut, E. (1976). Une nouvelle définition de la famille des Dyrosauridae de Stefano, 1903 (Crocodylia, Mesosuchia) et ses conséquences: inclusion des genres Hyposaurus et Sokotosuchus dans les Dyrosauridae. ''Geobios'' '''9''':333-336.</ref><ref>Buffetaut, E. (1980). Les crocodiliens Paléogènes du Tilemsi (Mali): un aperçu systématique. ''Palaeovertebrata, Mémoire jubilaire en hommage à René Lavocat'' 15–35.</ref>. It has since been proven to be a distinct genus of dyrosaurid separate from both ''Dyrosaurus'' and ''Hyposaurus''<ref>Jouve, S. & Schwarz, D. (2004). Congosaurus bequaerti, a Paleocene dyrosaurid (Crocodyliformes; Mesoeucrocodylia) from Landana (Angola). ''Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre'' '''74''':129-146.</ref>.
'''''Congosaurus''''' is an extinct [[genus]] of [[Dyrosauridae|dyrosaurid]] [[mesoeucrocodylia]]n. [[Fossil]]s have been found from [[Angola]] and date back to the [[Paleocene]] epoch. In 1952 and 1964 ''Congosaurus'' was proposed to be [[Synonym (taxonomy)|synonymous]] with ''[[Dyrosaurus]]''<ref>{{cite journal | last1 = Arambourg | first1 = C. | year = 1952 | title = Les vertébrés fossiles des gisements de phosphates (Maroc, Algérie, Tunisie) | url = | journal = Notes et Mémoires du Service géologique du Maroc | volume = 92 | issue = | page = 372 }}</ref><ref>Antunes, M. T. (1964). O neocretácico e o cenozóico do litoral de Angola. ''Junta de Investigações do Ultramar, Lisboa'', 254 pp.</ref>. The genus was later regarded to be synonymous with ''[[Hyposaurus]]'' in 1976 and 1980<ref>{{cite journal | last1 = Buffetaut | first1 = E. | year = 1976 | title = Une nouvelle définition de la famille des Dyrosauridae de Stefano, 1903 (Crocodylia, Mesosuchia) et ses conséquences: inclusion des genres Hyposaurus et Sokotosuchus dans les Dyrosauridae | url = | journal = Geobios | volume = 9 | issue = | pages = 333–336 }}</ref><ref>Buffetaut, E. (1980). Les crocodiliens Paléogènes du Tilemsi (Mali): un aperçu systématique. ''Palaeovertebrata, Mémoire jubilaire en hommage à René Lavocat'' 15–35.</ref>. It has since been proven to be a distinct genus of dyrosaurid separate from both ''Dyrosaurus'' and ''Hyposaurus''<ref>{{cite journal | last1 = Jouve | first1 = S. | last2 = Schwarz | first2 = D. | year = 2004 | title = Congosaurus bequaerti, a Paleocene dyrosaurid (Crocodyliformes; Mesoeucrocodylia) from Landana (Angola) | url = | journal = Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre | volume = 74 | issue = | pages = 129–146 }}</ref>.


In 2007 a new species of ''Congosaurus'' was constructed after previously being assigned to ''[[Rhabdognathus]]'', and named ''C. compressus'', extending the geographic range of the genus into the present-day [[Sahara]]<ref>Jouve, S. (2007). Taxonomic revision of the Dyrosaurid assemblage (Crocodyliformes: Mesoeucrocodylia) from the Paleocene of the Iullemmeden Basin, west Africa. ''[[Journal of Paleontology]]'' '''81'''(1):163-175.</ref>. Lateromedially compressed teeth show its close relation to ''C. bequaerti''.
In 2007 a new species of ''Congosaurus'' was constructed after previously being assigned to ''[[Rhabdognathus]]'', and named ''C. compressus'', extending the geographic range of the genus into the present-day [[Sahara]]<ref>{{cite journal | last1 = Jouve | first1 = S. | year = 2007 | title = Taxonomic revision of the Dyrosaurid assemblage (Crocodyliformes: Mesoeucrocodylia) from the Paleocene of the Iullemmeden Basin, west Africa | url = | journal = [[Journal of Paleontology]] | volume = 81 | issue = 1| pages = 163–175 }}</ref>. Lateromedially compressed teeth show its close relation to ''C. bequaerti''.


==References==
==References==
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[[Category:Marine crocodiles]]
[[Category:Marine crocodiles]]
[[Category:Prehistoric reptiles of Africa]]
[[Category:Prehistoric reptiles of Africa]]



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{{Archosaur-stub}}

Revision as of 00:14, 20 November 2010

Congosaurus
Temporal range: Paleocene
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Sauropsida
Subclass:
Diapsida
Infraclass:
Archosauromorpha
Superorder:
Crocodylomorpha
(unranked):
Mesoeucrocodylia
(unranked) Neosuchia
Family:
Dyrosauridae
Subfamily:
Dyrosaurinae
Genus:
Congosaurus

Dollo, 1914
Species
  • C. bequaerti Dollo, 1914 (type)
  • C. compressus (Buffetaut, 1980 [originally Rhabdognathus compressus])

Congosaurus is an extinct genus of dyrosaurid mesoeucrocodylian. Fossils have been found from Angola and date back to the Paleocene epoch. In 1952 and 1964 Congosaurus was proposed to be synonymous with Dyrosaurus[1][2]. The genus was later regarded to be synonymous with Hyposaurus in 1976 and 1980[3][4]. It has since been proven to be a distinct genus of dyrosaurid separate from both Dyrosaurus and Hyposaurus[5].

In 2007 a new species of Congosaurus was constructed after previously being assigned to Rhabdognathus, and named C. compressus, extending the geographic range of the genus into the present-day Sahara[6]. Lateromedially compressed teeth show its close relation to C. bequaerti.

References

  1. ^ Arambourg, C. (1952). "Les vertébrés fossiles des gisements de phosphates (Maroc, Algérie, Tunisie)". Notes et Mémoires du Service géologique du Maroc. 92: 372.
  2. ^ Antunes, M. T. (1964). O neocretácico e o cenozóico do litoral de Angola. Junta de Investigações do Ultramar, Lisboa, 254 pp.
  3. ^ Buffetaut, E. (1976). "Une nouvelle définition de la famille des Dyrosauridae de Stefano, 1903 (Crocodylia, Mesosuchia) et ses conséquences: inclusion des genres Hyposaurus et Sokotosuchus dans les Dyrosauridae". Geobios. 9: 333–336.
  4. ^ Buffetaut, E. (1980). Les crocodiliens Paléogènes du Tilemsi (Mali): un aperçu systématique. Palaeovertebrata, Mémoire jubilaire en hommage à René Lavocat 15–35.
  5. ^ Jouve, S.; Schwarz, D. (2004). "Congosaurus bequaerti, a Paleocene dyrosaurid (Crocodyliformes; Mesoeucrocodylia) from Landana (Angola)". Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre. 74: 129–146.
  6. ^ Jouve, S. (2007). "Taxonomic revision of the Dyrosaurid assemblage (Crocodyliformes: Mesoeucrocodylia) from the Paleocene of the Iullemmeden Basin, west Africa". Journal of Paleontology. 81 (1): 163–175.


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