Samuwar Caturrita

Samuwar Caturrita wani dutse ne da aka samo a Rio Grande do Sul, Brazil. An ajiye ruwanta a cikin Basin Paraná. Samuwar ta fito ne daga Upper Triassic kuma ta zama wani ɓangare na Babban Sashen Santa Maria a cikin babban sashe na Rukunin Rosário do Sul.

 Ilimin kalmomi 
Samuwar samu wannan sunan, saboda Caturrita ne unguwa (barrio) na Santa Maria.Formação Santa Maria Archived 2008-05-01 at the Wayback Machine, (in PortuguesePaleoformações[permanent dead link], (in Portuguese) A cikin Portuguese caturrita kuma yana nufin parakeet na monk.

 Dabaru 
Sediments na Caturrita Formation suna cikin naúrar na biyu na Santa Maria Supersequence kuma sun mamaye Memba na Alemoa na Samuwar Santa Maria. Sediments na yumbu na Memba na Alemoa a hankali suna ba da hanya zuwa mafi yawan yashi, da wuya conglomeratic, Caturrita Formation, wanda ya ƙare da rashin daidaituwa. Bayan wannan taron na ɓarna, bi raƙuman ruwa na Rhaetian na Mata Sandstone, raka'a na uku na Babban Sashen Santa Maria.

An taɓa ɗaukar Tsarin Caturrita azaman memba na Tsarin Tsarin Botucatu mai zurfiBortoluzzi, C.A. 1974. Contribuição à Geologia da Região de Santa Maria, Rio Grande do Sul, Brasil. Pesquisas, 4 (1):7-86 ko kuma an faɗaɗa shi don haɗawa da Sandstone Mata.Andreis, R.R.; Bossi, G.E. & Montardo, D.K. 1980. O Grupo Rosário do Sul (Triássico) no Rio grande do Sul. In: CONGRESSO BRASILEIRO DE GEOLOGIA,31, Balneário 16 Camboriú, 1980. Anais... Balneário de Camboriú, SBG, v. 2, p.659-673

Tsarin Caturrita ya kai matsakaicin kauri na mita 60, amma gabaɗaya yana jujjuyawa a kusa da ƙimar mita 30.

 Shekaru 
Har zuwa 2018 ba a tantance cikakkun shekaru ba, amma an fi sanya samuwar ga marigayi Carnian zuwa farkon shekarun Norian bisa dalilan burbushin halittu. Koyaya, Rhaetian ko ma farkon Jurassic shekarun wannan rukunin shima an ba da shawarar a cikin adabi.Rafael Costa da Silva; Ronaldo Barboni; Tânia Dutra; Michel Marques Godoy; Raquel Barros Binotto (2012). "Footprints of large theropod dinosaurs and implications on the age of Triassic biotas from Southern Brazil". Journal of South American Earth Sciences. 39: 16–23. Bibcode:2012JSAES..39...16D. doi:10.1016/j.jsames.2012.06.017. A U-Pb (Uranium lalata) dating gano cewa Caturrita Formation yana da kwanan wata a kusa da 225.42 shekaru miliyan da suka wuce, ya sanya shi kasa da shekaru miliyan 10 fiye da Santa Maria da Ischigualasto Formations, daga inda aka san farkon dinosaurs.Langer, M.C.; Ramezani, J.; Da Rosa, Á.A.S. (2018). "U-Pb age constraints on dinosaur rise from south Brazil". Gondwana Research. X (18): 133–140. Bibcode:2018GondR..57..133L. doi:10.1016/j.gr.2018.01.005

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