Arid
DOI10.1016/j.palaeo.2016.11.009
A new tetrapod ichnotaxon from Botucatu Formation, Lower Cretaceous (Neocomian), Brazil, with comments on fossil track preservation on inclined planes and local paleoecology
Buck, Pedro Victor1; Ghilardi, Aline Marcele2; Peixoto, Bernardo de C. P. e M.1; dos Reis Fernandes, Luciana Bueno3; Fernandes, Marcelo Adorna3
通讯作者Buck, Pedro Victor
来源期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
出版年2017
卷号466页码:21-37
英文摘要

Botucatu Formation is a paleoerg, worldwide famous for its vertebrate and invertebrate ichnofossils. Among Botucatu Formation tetrapod tracks, ichnogenus Brasilichnium Leonardi, 1981 is well known, being generally attributed to mammaliform trackmakers. In this study a new ichnotaxon is described, Brasilichnium saltatorium isp. nov., characterized by a hopping locomotion in phases. The new ichnotaxon differs from B. elusivum Leonardi, 1981 mainly for the locomotion pattern. It also differs from other ichnotaxa by indicating hopping progression regarding limb morphology and track configuration. Fossil evidence shows B. saltatorium and B. elusivum could be produced by the same organism and represent an alternation in locomotory behavior. Neoichnological experiments were conducted to better understand track preservation and aspects of saltatorial dynamics on inclined planes. It was observed differences in heteropody degree may be related to movement direction and locomotion effort on ascending or descending the incluned plane. Due to extramorphological features, heteropody is more evident when the producer climbs the simulated dune. Also, when the movement is ascendent, lack of handprints can occur. This can be explained by total overlap of pes and manus impression and subsurface hand impression. Comparing with recent organisms living in similar environments and conditions, the Botucatu Formation B. saltatorium producer should have been a generalist organism likely with an omnivorous habit. It may have adopted hopping locomotion to gain velocity when hunting, escaping predators, or to facilitate progression on inclined planes and hot sand. sao Bento quarry represents a paleodesert environment with relative high humidity, where temporary lagoons may have formed during pluvial events. Paleo-rain episode evidence is preserved through raindrops impact craters on local sandstone. Sao Bento quarry paleoenvironment sustained a rich paleofauna, represented by abundant ichnofossils. This local diversity suggests a punctual productive desert paleocommunity with several paleoecological interactions, where Brasilichnium producer was one of the fundamental elements. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Brasilichnium saltatorium isp nov. Mammaliform footprints Saltatorial locomotion Ichnofossil Parana Basin Paleodesert
类型Article
语种英语
国家Brazil
收录类别SCI-E
WOS记录号WOS:000392766900003
WOS关键词JURASSIC NAVAJO SANDSTONE ; PARANA BASIN ; VERTEBRATE TRACKWAYS ; PRIMARY PRODUCTIVITY ; NAMIB DESERT ; DEPOSITS ; DUNES ; ARARAQUARA ; BEHAVIOR ; ECOLOGY
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Physical Geography ; Geology ; Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201343
作者单位1.Univ Fed Sao Carlos, Ctr Ciencias Biol & Saude, Programa Pos Grad Ecol & Recursos Nat, Rodovia Washington Luis,Km 235-SP-310, BR-13565905 Sao Carlos, SP, Brazil;
2.Univ Fed Pernambuco, Campus Vitoria de Santo Antao, Vitoria De Santo Antao, PE, Brazil;
3.Univ Fed Sao Carlos, Dept Ecol & Biol Evolut, Lab Paleoecol & Paleoicnol, Rodovia Washington Luis,Km 235-SP-310, BR-13565905 Sao Carlos, SP, Brazil
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GB/T 7714
Buck, Pedro Victor,Ghilardi, Aline Marcele,Peixoto, Bernardo de C. P. e M.,et al. A new tetrapod ichnotaxon from Botucatu Formation, Lower Cretaceous (Neocomian), Brazil, with comments on fossil track preservation on inclined planes and local paleoecology[J],2017,466:21-37.
APA Buck, Pedro Victor,Ghilardi, Aline Marcele,Peixoto, Bernardo de C. P. e M.,dos Reis Fernandes, Luciana Bueno,&Fernandes, Marcelo Adorna.(2017).A new tetrapod ichnotaxon from Botucatu Formation, Lower Cretaceous (Neocomian), Brazil, with comments on fossil track preservation on inclined planes and local paleoecology.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,466,21-37.
MLA Buck, Pedro Victor,et al."A new tetrapod ichnotaxon from Botucatu Formation, Lower Cretaceous (Neocomian), Brazil, with comments on fossil track preservation on inclined planes and local paleoecology".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 466(2017):21-37.
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