It's naming means "Lecho Formation bird living at El Brete". Lectavis, after Latinlectus ("bed") = Spanishlecho + Latin avis, "bird". bretincola, after the type localityestancia El Brete + Latin incola, "inhabitant".
Description
The presently only known fossil bones (PVL-4021-1) are mostly of the left tibiotarsus (lower leg) and tarsometatarsus (upper foot) of a single individual. L. bretincola was a sizeable bird, with a 16-centimetre (6.3 in) tibiotarsus and a tarsometatarsus which if complete must have been nearly 10 centimetres (3.9 in) long (Chiappe 1993). This remains indicate an animal with a length of 41 cm (16 in), hip height of 30 cm (12 in), and weight of 1.15 kg (2.5 lb).[1]
It possesses a hypotarsus, which it evolved autapomorphically from modern birds, as it covers the upper end of the second, not the third, toe's bones. This structure serves to attach and arrest the posterior cruciate ligament, which in turn prevents the lower and upper leg from shifting out of position during walking.
Classification
It was a rather advanced species of enantiornithine and possibly quite closely related to Enantiornis and Avisaurus, but more likely closer to other Euenantiornithes (Sanz et al. 1995). Its exact relationships, as with most enantiornithine birds, are unresolved however.
Paleoecology
Thus, it can be concluded that L. bretincola was a much more terrestrial species than its relative Yungavolucris brevipedalis which lived at the same time and place. Its habitat was a richly vegetated coastal area that was dotted by – possibly brackish – lakes or small rivers (Chiappe 1993), and it might thus be that the present species represents a case of parallel evolution with waders and similar semi-aquatic forms, or even a running bird similar to an oversized courser, and quite unlike anything living today.
References
^Rubén Molina-Pérez, Asier Larramendi, David Connolly, Gonzalo Ángel Ramírez Cruz, Andrey Atuchin (June 25, 2019). Dinosaur Facts and Figures: The Theropods and Other Dinosauriformes. Princeton University Press. p. 281. ISBN9780691190594. Retrieved 29 August 2022.{{cite book}}: CS1 maint: multiple names: authors list (link)
Bibliography
Chiappe, Luis M. (1993): Enantiornithine (Aves) Tarsometatarsi from the Cretaceous Lecho Formation of Northwestern Argentina. American Museum Novitates3083: 1-27. [English with Spanish abstract] PDF fulltext
Sanz, José L., Chiappe, Luis M. & Buscalioni, Angela D. (1995): The Osteology of Concornis lacustris (Aves: Enantiornithes) from the Lower Cretaceous of Spain and a Reexamination of its Phylogenetic Relationships. American Museum Novitates3133: 1-23. [English with Spanish abstract] PDF fulltext
lectavis, genus, enantiornithine, birds, their, fossil, bones, have, been, recovered, from, late, cretaceous, maastrichtian, lecho, formation, estancia, brete, argentina, genus, contains, single, species, bretincola, temporal, range, maastrichtian, preꞒ, resto. Lectavis is a genus of enantiornithine birds Their fossil bones have been recovered from the Late Cretaceous Maastrichtian c 70 6 66 mya Lecho Formation at estancia El Brete Argentina The genus contains a single species Lectavis bretincola LectavisTemporal range Maastrichtian 70 68 Ma PreꞒ Ꞓ O S D C P T J K Pg N Restoration of Lectavis bretincola predating a hermit crabScientific classificationKingdom AnimaliaPhylum ChordataClade DinosauriaClade SaurischiaClade TheropodaClade AvialaeClade EnantiornithesGenus LectavisChiappe 1993Species L bretincolaBinomial name Lectavis bretincolaChiappe 1993 Contents 1 Etymology 2 Description 3 Classification 4 Paleoecology 5 References 5 1 BibliographyEtymology EditIt s naming means Lecho Formation bird living at El Brete Lectavis after Latin lectus bed Spanish lecho Latin avis bird bretincola after the type locality estancia El Brete Latin incola inhabitant Description EditThe presently only known fossil bones PVL 4021 1 are mostly of the left tibiotarsus lower leg and tarsometatarsus upper foot of a single individual L bretincola was a sizeable bird with a 16 centimetre 6 3 in tibiotarsus and a tarsometatarsus which if complete must have been nearly 10 centimetres 3 9 in long Chiappe 1993 This remains indicate an animal with a length of 41 cm 16 in hip height of 30 cm 12 in and weight of 1 15 kg 2 5 lb 1 It possesses a hypotarsus which it evolved autapomorphically from modern birds as it covers the upper end of the second not the third toe s bones This structure serves to attach and arrest the posterior cruciate ligament which in turn prevents the lower and upper leg from shifting out of position during walking Classification EditIt was a rather advanced species of enantiornithine and possibly quite closely related to Enantiornis and Avisaurus but more likely closer to other Euenantiornithes Sanz et al 1995 Its exact relationships as with most enantiornithine birds are unresolved however Paleoecology EditThus it can be concluded that L bretincola was a much more terrestrial species than its relative Yungavolucris brevipedalis which lived at the same time and place Its habitat was a richly vegetated coastal area that was dotted by possibly brackish lakes or small rivers Chiappe 1993 and it might thus be that the present species represents a case of parallel evolution with waders and similar semi aquatic forms or even a running bird similar to an oversized courser and quite unlike anything living today References Edit Ruben Molina Perez Asier Larramendi David Connolly Gonzalo Angel Ramirez Cruz Andrey Atuchin June 25 2019 Dinosaur Facts and Figures The Theropods and Other Dinosauriformes Princeton University Press p 281 ISBN 9780691190594 Retrieved 29 August 2022 a href Template Cite book html title Template Cite book cite book a CS1 maint multiple names authors list link Bibliography Edit Chiappe Luis M 1993 Enantiornithine Aves Tarsometatarsi from the Cretaceous Lecho Formation of Northwestern Argentina American Museum Novitates 3083 1 27 English with Spanish abstract PDF fulltext Sanz Jose L Chiappe Luis M amp Buscalioni Angela D 1995 The Osteology of Concornis lacustris Aves Enantiornithes from the Lower Cretaceous of Spain and a Reexamination of its Phylogenetic Relationships American Museum Novitates 3133 1 23 English with Spanish abstract PDF fulltext Portals Paleontology Birds Cretaceous This prehistoric bird article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Lectavis amp oldid 1107423803, wikipedia, wiki, book, books, library,
