What does stegocephali mean?
Definitions for stegocephali
ste·go·cephal·i
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Wikipedia
Stegocephali
Stegocephali (often spelled Stegocephalia) is a group containing all four-limbed vertebrates. It is equivalent to a broad definition of Tetrapoda: under this broad definition, the term "tetrapod" applies to any animal descended from the first vertebrate with limbs and toes, rather than fins. This includes both the modern lineage of limbed vertebrates (the crown group, including modern amphibians, mammals, reptiles and birds) as well as a portion of the stem group, limbed vertebrates that evolved prior to the origin of the crown group. Members of the tetrapod stem group include the earliest limbed tetrapodomorphs such as Ichthyostega and Acanthostega, which evolved in the Devonian Period long before any modern form of tetrapod. Many paleontologists prefer a stricter definition of Tetrapoda which applies solely to the crown group, excluding earlier types of limbed tetrapodomorphs. Stegocephali was re-established to replace the broad definition of Tetrapoda, resolving the usage of two conflicting definitions in discussions of tetrapod evolution. Stegocephali (from Greek στεγοκεφαλια 'roofed head') was coined in 1868 by the American paleontologist Edward Drinker Cope, who used it as a general category of prehistoric amphibians. This name was in reference to the skull form of many early tetrapods, with a low, solid shape combining numerous strongly-textured dermal bones. In its original usage, the term quickly became obsolete. In 1998, Canadian paleontologist Michel Laurin repopularized the term and provided a formal phylogenetic definition as a monophyletic clade containing both crown-group and stem-group tetrapods. Laurin's Stegocephali is roughly defined as including all vertebrates closer to modern tetrapods than to Panderichthys. This definition was intended to include taxa with digits rather than fins, except where secondarily lost. Another definition, published in Phylonyms, defines the group as including all taxa closer to Eryops than to Tiktaalik, Panderichthys, or Eusthenopteron. The discovery of the Zachelmie trackways in 2010 suggests that stegocephalians possibly emerged 395 Ma or earlier.
Numerology
Chaldean Numerology
The numerical value of stegocephali in Chaldean Numerology is: 3
Pythagorean Numerology
The numerical value of stegocephali in Pythagorean Numerology is: 3
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"stegocephali." Definitions.net. STANDS4 LLC, 2024. Web. 6 May 2024. <https://www.definitions.net/definition/stegocephali>.
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