Lecho Formation
Script error: No such module "Infobox".Template:Template otherScript error: No such module "check for unknown parameters". The Lecho Formation is a geological formation in the Salta Basin of the provinces Jujuy and Salta of northwestern Argentina. Its strata date back to the Early Maastrichtian, and is a unit of the Salta Group. The fine-grained bioturbated sandstones of the formation were deposited in a fluvial to lacustrine coastal plain environment.
Dinosaur remains are among the fossils that have been recovered from the formation.[1]
According to Frankfurt and Chiappe (1999), the Lecho Formation is composed of reddish sandstones. The Lecho is part of the Upper/Late Cretaceous Balbuena Subgroup (Salta Group), which is a near-border stratigraphic unit of the Andean sedimentary basin. Fossils from this formation include the titanosaur Saltasaurus along with a variety of avian and non-avian theropods.
Fossil content
| Aves and Dinosaurs from the Lecho Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Elbretornis | E. bonapartei | Scapula, partial coracoid, humerus, partial radius, partial ulna[2] | Enantiornithes | |||
| Enantiornis[3] | E. leali[3] | "Postcranial elements"[4] | Enantiornithes | |||
| Lectavis[3] | L. bretincola[3] | "Tarsometatarsus and tibiotarsus"[4] | Enantiornithes | |||
| Martinavis | M. minor | Partial humerus[2] | Enantiornithes | |||
| M. saltariensis | Humerus[2] | |||||
| M. vincei | Humeri[2] | |||||
| M. whetstonei | Partial humerus[2] | |||||
| Noasaurus[3] | N. leali[3] | Isolated elements from the head and foot, as well as a verebral arch.[5] A putative oviraptorosaurian cervical vertebra [6] is likely to belong to this taxon.[7] | Noasaurid abelisaurs | |||
| Saltasaurus[3] | S. loricatus[3] | "Partial skeletons of at least [six] individuals, including jaws and armor."[8] | Saltasaurid titanosaurs | |||
| Soroavisaurus[3] | S. australis[3] | "Tarsometatarsus and phalanges."[9] | Avisaurid enantiornithes | |||
| Yungavolucris[3] | Y. brevipedalis[3] | "Tarsometatarsi"[9] | Enantiornithes | |||
See also
References
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- ↑ Weishampel et al., 2004, "Dinosaur distribution (Late Cretaceous, South America)." pp. 600-604
- ↑ a b c d e Walker & Dyke, 2009
- ↑ a b c d e f g h i j k l "63.7 Provincia de Salta, Argentina; 3. Lower Kirtland Formation," in Weishampel et al., 2004, p.603
- ↑ a b "Table 11.1," in Weishampel et al., 2004, p.213
- ↑ "Table 3.1," in Weishampel et al., 2004, p.49
- ↑ Frankfurt & Chiappe, 1999
- ↑ Agnolin & Martinelli, 2007
- ↑ "Table 13.1," in Weishampel et al., 2004, p.270
- ↑ a b "Table 11.1," in Weishampel et al., 2004, p.214
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Bibliography
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