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About: Sebecia

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Sebecia is an extinct clade of mesoeucrocodylian crocodyliforms that includes peirosaurids and sebecids. It was first constructed in 2007 to include Hamadasuchus, Peirosauridae, and Sebecus. It was initially considered to be the sister taxon of the clade Neosuchia, which includes living crocodilians, although some later studies have placed it within Neosuchia as a basal clade. Sebecians were terrestrial crocodyliforms characterized by their deep snouts and dentition. They first appeared in the Late Cretaceous, survived the Cretaceous–Paleogene extinction event, and became extinct in the Miocene epoch.

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  • Sebecia es un clado extinto de crocodiliformes mesoeucrocodilios que incluye a los peirosáuridos y a los sebécidos. Fue inicialmente propuesto en 2007 para incluir a Hamadasuchus, Peirosauridae y Sebecus. Fue inicialmente considerado el taxón hermano del clado Neosuchia, que incluye a los crocodilianos vivientes, aunque algunos estudios posteriores los han situado dentro de Neosuchia como un clado basal.​​ Los sebecios eran crocodiliformes terrestres caracterizados por sus hocicos altos y sus dientes . Ellos aparecieron en el Cretácico Superior, sobreviviendo la extinción masiva del Cretácico-Terciario, y se extinguieron durante el período Mioceno. De acuerdo a los paleontólogos y , quienes definieron el clado en 2007, Sebecia también incluye géneros antes asignados a la familia Baurusuchidae, entre ellos . Sin embargo, otros baurusúquidos, como Baurusuchus, fueron situados por fuera de Sebecia. Por lo tanto, Baurusuchidae fue considerada polifilético y no es un clado verdadero. Abajo está el cladograma realizado por Larsson y Sues en su análisis filogenético:​ Larsson y Sues definieron a Sebecidae como todos los taxones más cercanamente relacionados con Sebecus que a Peirosaurus o Uberabasuchus, siendo ambos peirosáuridos. Su definición de Peirosauridae es todos los taxones más cercanamente relacionados con Peirosaurus y Uberabasuchus que a Sebecus, que es un sebécido. Esta definición es problemática, especialmente en relación con los últimos estudios filogenéticos de crocodiliformes. Muchos de estos estudios han hallado que los sebécidos son miembros derivados de un clado que contiene a los notosuquios, mientras que los peirosáuridos serían neosuquios basales. Si las definiciones de estas dos familias son aplicadas a los últimos análisis filogenéticos, Sebecidae podría incluir a todos los notosuquios y Peirosauridae podría incluir a todos los neosuquios.​ (es)
  • Sebecia is an extinct clade of mesoeucrocodylian crocodyliforms that includes peirosaurids and sebecids. It was first constructed in 2007 to include Hamadasuchus, Peirosauridae, and Sebecus. It was initially considered to be the sister taxon of the clade Neosuchia, which includes living crocodilians, although some later studies have placed it within Neosuchia as a basal clade. Sebecians were terrestrial crocodyliforms characterized by their deep snouts and dentition. They first appeared in the Late Cretaceous, survived the Cretaceous–Paleogene extinction event, and became extinct in the Miocene epoch. According to paleontologists and Hans-Dieter Sues, who constructed the clade in 2007, Sebecia also includes genera that were once assigned to Baurusuchidae, namely Pabwehshi. However, other baurusuchids, namely Baurusuchus, were placed outside Sebecia. Therefore, Baurusuchidae was considered polyphyletic and thus not a true clade. Below is the cladogram produced from Larsson and Sues' phylogenetic analysis: Larsson and Sues defined Sebecidae as all taxa more closely related to Sebecus than to Peirosaurus or Uberabasuchus, both of which are peirosaurids. They defined Peirosauridae as all taxa more closely related to Peirosaurus and Uberabasuchus than to Sebecus, which is a sebecid. This definition is problematic, especially in relation to later phylogenetic studies of crocodyliforms. Many of these studies have found sebecids to be derived members of a clade containing notosuchians, while finding peirosaurids to be basal neosuchians. If the definitions of these two families are applied to later phylogenetic analyses, Sebecidae would include all notosuchians and Peirosauridae would include all neosuchians. (en)
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  • Larsson and Sues, 2007 (en)
dbp:date
  • June 2021 (en)
dbp:fossilRange
  • Late Cretaceous - Middle Miocene, (en)
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  • Skull of Sebecus icaeorhinus (en)
dbp:reason
  • Which taxon was the late-surviving one? (en)
dbp:subdivision
  • * Baharijodon * Doratodon * Trematochampsa? * Wanosuchus * Mahajangasuchidae * Sebecidae * Peirosauridae (en)
dbp:subdivisionRanks
  • Families (en)
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  • Sebecia (en)
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  • Sebecia es un clado extinto de crocodiliformes mesoeucrocodilios que incluye a los peirosáuridos y a los sebécidos. Fue inicialmente propuesto en 2007 para incluir a Hamadasuchus, Peirosauridae y Sebecus. Fue inicialmente considerado el taxón hermano del clado Neosuchia, que incluye a los crocodilianos vivientes, aunque algunos estudios posteriores los han situado dentro de Neosuchia como un clado basal.​​ Los sebecios eran crocodiliformes terrestres caracterizados por sus hocicos altos y sus dientes . Ellos aparecieron en el Cretácico Superior, sobreviviendo la extinción masiva del Cretácico-Terciario, y se extinguieron durante el período Mioceno. (es)
  • Sebecia is an extinct clade of mesoeucrocodylian crocodyliforms that includes peirosaurids and sebecids. It was first constructed in 2007 to include Hamadasuchus, Peirosauridae, and Sebecus. It was initially considered to be the sister taxon of the clade Neosuchia, which includes living crocodilians, although some later studies have placed it within Neosuchia as a basal clade. Sebecians were terrestrial crocodyliforms characterized by their deep snouts and dentition. They first appeared in the Late Cretaceous, survived the Cretaceous–Paleogene extinction event, and became extinct in the Miocene epoch. (en)
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  • Sebecia (es)
  • Sebecia (nl)
  • Sebecia (en)
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