Wachholz, a new exquisite dinosaur-bearing fossiliferous site from the Upper Triassic of southern Brazil

Müller, Rodrigo Temp; Rosa, Átila Augusto Stock da; Silva, Lúcio Roberto da; Aires, Alex Sandro Schiller; Pacheco, Cristian Pereira; Pavanatto, Ane Elise Branco; Dias‐da‐Silva, Sérgio

doi:10.1016/j.jsames.2014.10.009

Cited by 22 publications

(8 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A slightly younger fauna, correlated to the Argentinean Los Colorados Formation, is recovered from the upper portions of the Candelária Sequence. Reported dinosauriforms include the silesaurid Sacisaurus agudoensis Ferigolo & Langer, 2007, the putative theropod Guaibasaurus candelariensis Bonaparte, Ferigolo & Ribeiro, 1999, and the sauropodomorph Unaysaurus tolentinoi Leal et al, 2004, apart from other fragmentary or not yet described materials (Bittencourt et al, 2012a,b;Müller et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A juvenile sauropodomorph tibia from the 'Botucaraí Hill', Late Triassic of Southern Brazil

Pretto¹,

Veiga²,

Langer³

et al. 2017

Rev. bras. paleontol.

View full text Add to dashboard Cite

-The 'Botucaraí Hill' outcrop yielded a diverse Late Triassic vertebrate fauna, including several dinosaur remains, but most collected specimens are represented only by isolated bones. We present here a new dinosaur tibia from that site, particularly notable for its small size. Anatomical comparisons and a phylogenetic analysis support a sauropodomorph affinity for the specimen. In addition, histological analyses on transverse sections of the tibial shaft revealed a very thin bone wall, characterized by woven matrix with high vascularization, and the complete absence of lines of arrested growth (LAGs). These features suggest that the specimen was undergoing rapid and uninterrupted bone growth prior to death. Indeed, the small size of the specimen, the poor ossification of the bone extremities, and the absence of LAGs indicate that it represents a juvenile individual, as not previously recorded for the Brazilian Upper Triassic dinosaur fauna.

show abstract

Section: Introductionmentioning

confidence: 99%

A juvenile sauropodomorph tibia from the 'Botucaraí Hill', Late Triassic of Southern Brazil

Pretto¹,

Veiga²,

Langer³

et al. 2017

Rev. bras. paleontol.

View full text Add to dashboard Cite

show abstract

“…However, in the last years, systematic field work has resulted in the discovery of several new sites, including the one presented herein -Bortolin site -, as well as several new tetrapod taxa and records (e.g. Bonaparte et al, 2010;Cabreira et al, 2016;Müller et al, 2015Müller et al, , 2017Pacheco et al, 2018). The Bortolin site, which crops out nearby the urban area of the municipality of Dona Francisca, Rio Grande do Sul State ( Figure 1A-C), was preliminarily reported by Da-Rosa et al (2008) and prospected by different Brazilian researchers.…”

Section: Introductionmentioning

confidence: 67%

“…Da-Rosa et al, 2004, 2005 and Upper Triassic (e.g. Bonaparte et al, 1999Bonaparte et al, , 2010Da-Rosa et al, 2006;Cabreira et al, 2011;Müller et al, 2015;Pavanatto et al, 2018) were discovered, improving considerably the faunal composition of the Triassic of Southern Brazil (e.g. Langer et al, 2007;Dias-da-Silva et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Bortolin site, a new fossiliferous locality in the Triassic (Ladinian/Carnian) of southern Brazil

Pavanatto¹,

Da-Rosa²,

Müller³

et al. 2020

Rev. bras. paleontol.

Self Cite

View full text Add to dashboard Cite

A new fossiliferous site from the Pinheiros-Chiniquá Sequence (Santa Maria Supersequence) with typical tetrapod components of the Dinodontosaurus Assemblage Zone (AZ) is here described. The new site is included in the Faxinal do Soturno Structural Block. The fossil content is characterized by cranial and postcranial material of rauisuchian archosaurs, traversodontid and chiniquodontid cynodonts and dicynodonts, the first occurrence of a large-sized coelacanth fish in the Brazilian Triassic, as well as ichnological material, represented by coprolites. The presence of Luangwa together with Massetognathus raises interesting questions regarding the age of this site included in the Dinodontosaurus AZ when compared with other localities of Southern Brazil, western Argentina and Africa. As in other localities of this AZ, the fossil specimens recovered in Bortolin site exhibit remarkable differences on their fossil preservation: those from the lower portion of the outcrop (distal floodplain) possess a heterogeneous preservation (variable between poor to fairly good) whereas those from the top levels (proximal floodplain) are comparatively better preserved. This new locality, with a large amount of stratigraphically controlled fossils, constitutes a key-locality to study the distribution of Triassic terrestrial tetrapods and to perform comparisons with other sites of this AZ, in which several historical records lack a precise provenance.

show abstract

“…schultzi [8]. Finally, M. itaquii was recovered from rocks belonging to the upper part of the Candelária Sequence [10], constrained as about 225 Ma [11]. This framework allows changes in the sauropodomorph bauplan to be tracked along a ca 8 Ma time interval in Brazil.…”

Section: Discussionmentioning

confidence: 99%

“…The specimens were collected at the Wachholz site (29836 0 46.42 00 S; 53815 0 54.06 00 W), Agudo, Rio Grande do Sul, Brazil; upper portion of the Candelária Sequence, Paraná Basin [10]. Stratigraphically correlated beds from a nearby site were dated as early Norian (ca 225.42 + 0.37), Late Triassic [11].…”

Section: (G) Locality and Horizonmentioning

confidence: 99%

An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs

2018

Self Cite

View full text Add to dashboard Cite

The rise of sauropodomorphs is still poorly understood due to the scarcity of well-preserved fossils in early Norian rocks. Here, we present an association of complete and exceptionally well-preserved dinosaur skeletons that helps fill that gap. They represent a new species, which is recovered as a member of a clade solely composed of Gondwanan Triassic taxa. The new species allows the definition of a set of anatomical changes that shaped sauropodomorph evolution along a period from 233 to 225 Ma, as recorded in the well dated Late Triassic beds of Brazil. In that time span, apart from achieving a more herbivorous diet, sauropodomorph dinosaurs increased their size in a ratio of 230% and their typical long neck was also established, becoming proportionally twice longer than those of basal taxa. Indeed, the new dinosaur is the oldest-known sauropodomorph with such an elongated neck, suggesting that the ability to feed on high vegetation was a key trait achieved along the early Norian. Finally, the clustered preservation mode of the skeletons represents the oldest evidence of gregarious behaviour among sauropodomorphs.

show abstract

Wachholz, a new exquisite dinosaur-bearing fossiliferous site from the Upper Triassic of southern Brazil

Cited by 22 publications

References 72 publications

A juvenile sauropodomorph tibia from the 'Botucaraí Hill', Late Triassic of Southern Brazil

A juvenile sauropodomorph tibia from the 'Botucaraí Hill', Late Triassic of Southern Brazil

Bortolin site, a new fossiliferous locality in the Triassic (Ladinian/Carnian) of southern Brazil

An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs

Contact Info

Product

Resources

About