Puntanipterus

Puntanipterus
Temporal range: Late Jurassic-Early Cretaceous
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Pterosauria
Suborder: Pterodactyloidea
Superfamily: ?Dsungaripteroidea
Family: ?Dsungaripteridae
Genus: Puntanipterus
Bonaparte and Sánchez, 1975
Binomial name
Puntanipterus globosus
Bonaparte and Sánchez, 1975

Puntanipterus was a genus of ?dsungaripterid pterodactyloid pterosaur from the Upper Jurassic-Lower Cretaceous La Cruz Formation of San Luis, Argentina.

The genus was in 1975 named by José Bonaparte and Teresa Sánchez. The type species is Puntanipterus globosus. The genus name refers to the Puntanos, the colloquial name for the inhabitants of the province of San Luis after the old name of their capital "San Luis de la Punta de los Venados", and combines this with a Latinized Greek pteron, "wing". The specific name means "spherical" in Latin, a reference to the form of the lower tibia.

It is based on holotype PVL 3869 (earlier FML 3869) found in 1972, a 105 millimetres long tibiotarsus and seven centimetres long fibula; referred to it were a back vertebra and a wing and foot phalanx. The leg bones were described as similar to those of Pterodaustro (from slightly younger rocks), except for having an expanded spherical joint at the ankle and spiny processes on the side faces of the tibia at that end.[1]

Bonaparte in 1978 classified Puntanipterus as a member of the Pterodaustridae.[2] The same year Peter Wellnhofer was more careful and limited his assessment to a Pterodactyloidea incertae sedis.[3] In 1980 Peter Galton concluded it belonged to the Dsungaripteridae.[4] It was still by many considered to be a dsungaripterid by the time Peter Wellnhofer published The Illustrated Encyclopedia of Pterosaurs (several editions in the 1990s).[5]

However, in the nineties several tibiae conforming to that of Puntanipterus were found in the same strata as Pterodaustro; a direct comparison is only impossible because more complete specimens of the latter are always very compressed, deforming the ankle morphology; but smaller fragments containing not-compressed ankles all have the build of a Puntanipterus tibiotarsus. This is by South American workers seen as a strong indication that both forms are identical.[6]

Glut reports a personal communication from Laura Codorniú and Luis Chiappe (2004) that Puntanipterus should be regarded as a junior synonym of Pterodaustro,[7] but it remains to be seen if this will be supported in the future; it was not done in David Unwin's The Pterosaurs: From Deep Time, published in 2006 (he recognized it as a possibly valid species of uncertain relationships).[8]

References

  1. ↑ Bonaparte, J.F., and Sanchez, T.M. (1975). Restos de un pterosaurio Puntanipterus globosus de la formación La Cruz provincia San Luis, Argentina. Actas Primo Congresso Argentino de Paleontologia e Biostratigraphica 2:105-113. [Spanish]
  2. ↑ Bonaparte, F. (1978), El Mesozoico de América del Sur y sus tetrápodos, Opera Lilloana, v. 26
  3. ↑ Peter Wellnhofer (1978), Pterosauria - Handbuch der Paläoherpetologie, 19: 1-82
  4. ↑ P. M. Galton (1980), "Avian-like tibiotarsi of pterodactyloids (Reptilia: Pterosauria) from the Upper Jurassic of East Africa", Palaeontologische Zeitschrift 54(3/4): 331-342
  5. ↑ Wellnhofer, Peter (1996) [1991]. The Illustrated Encyclopedia of Pterosaurs. New York: Barnes and Noble Books. p. 134. ISBN 0-7607-0154-7.
  6. ↑ Luis M. Chiappe, David Rivarola, Edgardo Romero, Sergio Dávila and Laura Codorniú (1998), "Recent Advances in the Paleontology of the Lower Cretaceous Lagarcito Formation (Parque Nacional Sierra de las Quijadas, San Luis, Argentina), New Mexico Museum of Natural History and Science Bulletin, 14: 187-192
  7. ↑ Glut, D.F. (2006). Pterodaustro In: Glut, D.F. Dinosaurs: The Encyclopedia. Supplement 4. McFarland & Company, Inc.: Jefferson, North Carolina, 623-624. ISBN 0-7864-2295-5.
  8. ↑ Unwin, D.M. (2006). The Pterosaurs: From Deep Time. Pi Press:New York, 272-273. ISBN 0-13-146308-X.

External links