Recovering missing data: estimating position and size of caudal vertebrae in Staurikosaurus pricei Colbert, 1970
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| Format: | Artículo científico |
| Langue: | en |
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Academia Brasileira de Ciências
2011
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| _version_ | 1876462939297284096 |
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| author | ORLANDO N. GRILLO |
| author_facet | ORLANDO N. GRILLO |
| contents | Recovering missing data: estimating position and size of caudal vertebrae in Staurikosaurus pricei Colbert, 1970 ORLANDO N. GRILLO SERGIO A.K. AZEVEDO Multidisciplinaria (Ciencias Naturales y Exactas) regression Missing data caudal vertebra Staurikosaurus pricei Missing data is a common problem in paleontology. It makes it difficult to reconstruct extinct taxa accurately and restrains the inclusion of some taxa on comparative and biomechanical studies. Particularly, estimating the position of vertebrae on incomplete series is often non-empirical and does not allow precise estimation of missing parts. In this work we present a method for calculating the position of preserved middle sequences of caudal vertebrae in the saurischian dinosaur Staurikosaurus pricei, based on the length and height of preserved anterior and posterior caudal vertebral centra. Regression equations were used to estimate these dimensions for middle vertebrae and, consequently, to assess the position of the preserved middle sequences. It also allowed estimating these dimensions for non-preserved vertebrae. Results indicate that the preserved caudal vertebrae of Staurikosaurus may correspond to positions 1-3, 5, 7, 14-19/15-20, 24-25/25-26, and 29-47, and that at least 25 vertebrae had transverse processes. Total length of the tail was estimated in 134 cm and total body length was 220-225 cm. 2011 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32717681021 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.83 |
| format | Artículo científico |
| id | redalyc_32717681021 |
| institution | Redalyc |
| language | en |
| publishDate | 2011 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Recovering missing data: estimating position and size of caudal vertebrae in Staurikosaurus pricei Colbert, 1970 ORLANDO N. GRILLO Multidisciplinaria (Ciencias Naturales y Exactas) regression Missing data caudal vertebra Staurikosaurus pricei Recovering missing data: estimating position and size of caudal vertebrae in Staurikosaurus pricei Colbert, 1970 ORLANDO N. GRILLO SERGIO A.K. AZEVEDO Multidisciplinaria (Ciencias Naturales y Exactas) regression Missing data caudal vertebra Staurikosaurus pricei Missing data is a common problem in paleontology. It makes it difficult to reconstruct extinct taxa accurately and restrains the inclusion of some taxa on comparative and biomechanical studies. Particularly, estimating the position of vertebrae on incomplete series is often non-empirical and does not allow precise estimation of missing parts. In this work we present a method for calculating the position of preserved middle sequences of caudal vertebrae in the saurischian dinosaur Staurikosaurus pricei, based on the length and height of preserved anterior and posterior caudal vertebral centra. Regression equations were used to estimate these dimensions for middle vertebrae and, consequently, to assess the position of the preserved middle sequences. It also allowed estimating these dimensions for non-preserved vertebrae. Results indicate that the preserved caudal vertebrae of Staurikosaurus may correspond to positions 1-3, 5, 7, 14-19/15-20, 24-25/25-26, and 29-47, and that at least 25 vertebrae had transverse processes. Total length of the tail was estimated in 134 cm and total body length was 220-225 cm. 2011 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32717681021 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.83 |
| title | Recovering missing data: estimating position and size of caudal vertebrae in Staurikosaurus pricei Colbert, 1970 |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) regression Missing data caudal vertebra Staurikosaurus pricei |
| url | https://www.redalyc.org/articulo.oa?id=32717681021 |