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A new prozostrodontian cynodont (Therapsida) from the Late Triassic Riograndia Assemblage Zone (Santa Maria Supersequence) of Southern Brazil Anais da ABC (AABC)
SOARES,MARINA B.; MARTINELLI,AGUSTÍN G.; OLIVEIRA,TÉO V. DE.
We report here on a new prozostrodontian cynodont, Botucaraitherium belarminoigen. et sp. nov., from the Late Triassic RiograndiaAssemblage Zone (AZ) of the Candelária Sequence (Santa Maria Supersequence), collected in the Botucaraí Hill Site, Candelária Municipality, state of Rio Grande do Sul, Brazil. The new taxon is based on a single specimen (holotype MMACR-PV-003-T) which includes the left lower jaw, without postdentary bones, bearing the root of the last incisor, canine and four postcanines plus one partial crown inside the dentary, not erupted, and two maxillary fragments, one with a broken canine and another with one postcanine. The features of the lower jaw and lower/upper postcanines resemble those of the prozostrodontians Prozostrodon...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynodontia; Prozostrodontia; Santa Maria Supersequence; Triassic.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401673
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EDITORIAL NOTE: Collection of Paleontology Papers in honor of the Centenary of the Brazilian Academy of Sciences Anais da ABC (AABC)
KELLNER,ALEXANDER W.A.; SOARES,MARINA B..
Tipo: Info:eu-repo/semantics/other
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400101
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Osteohistology of the silesaurid Sacisaurus agudoensis from southern Brazil (Late Triassic) and implications for growth in early dinosaurs Anais da ABC (AABC)
VEIGA,FÁBIO H.; BOTHA-BRINK,JENNIFER; RIBEIRO,ANA MARIA; FERIGOLO,JORGE; SOARES,MARINA B..
Abstract: The non-dinosaurian dinosauriform silesaurids are the closest relatives of crown-group dinosaurs and are thus, important for understanding the origins of that group. Here, we describe the limb bone histology of the Late Triassic silesaurid Sacisaurus agudoensis from the Candelária Sequence of the Santa Maria Supersequence, Rio Grande do Sul state, Brazil. The sampled bones comprise eight femora and one fibula from different individuals. The microscopic analysis of all elements reveals uninterrupted fibrolamellar bone tissue indicating rapid growth. A transition to slower growing peripheral parallel-fibered bone tissue in some individuals indicates a decrease in growth rate, suggesting ontogenetic variation within the sample. The osteohistology of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Archosauria; Bone microstructure; Dinosauriform; Fibrolamellar bone; Growth rates.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400512
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