User:ZachT99/sandbox

Edits I was planning to make to the Frilled Shark page
edits (which I put in bold) to the frilled shark wiki page:

1) Add a sentence and reference to the last paragraph of the taxonomy and phylogeny section.

"The anatomic traits of body, muscle, and skeleton phylogenically include the frilled shark to the neoselachian clade (modern sharks and rays) which relates it to the cow shark, in the order Hexanchiformes. In addition, genetic analysis conducted by researchers in 2016 may also suggest that the species is part of the order Hexanchiformes. Nonetheless, as a systematist of biology, the ichthyologist Shigeru Shirai proposed the Chlamydoselachiformes taxonomic order exclusively for the C. anguinesis and the C. africana species of frilled sharks. "

2) Add a few sentences and reference to the second paragraph of the reproduction section.

"Reproductively, the frilled shark is an aplacental viviparous animal born from an egg, without a placenta to the mother shark. During gestation, the shark embryos develop in membranous egg-cases contained within the body of the mother shark, when the infant sharks emerge from their egg capsules in the uterus they feed on yolk until birth. The frilled-shark embryo is 3.0 cm (1.2 in) long, has a pointed head, slightly developed jaws, nascent external gills, and possesses all fins. The growth of the jaw for elasmobranchs seem to begin early in the embryonic stage, however, it has been observed not to be the case for frilled sharks. The elongation of the jaws seemed to begin later in embryonic development. This leads to some studies suggesting that the terminal position of their mouth, due to anterior elongation of the jaw, is a derived trait instead of ancestral. "

3) Add a sentence and reference to to the first paragraph in the description section

"The eel-like bodies of the Chlamydoselachus anguineus and the Chlamydoselachus africana species of frilled shark are anatomically different; the anguineusfrilled shark has a longer head and shorter gill slits; a spinal column with more vertebrae (160–171 vs. 147); and a lower-intestine spiral valve with more turns (35–49 vs. 26–28) than does the africana frilled shark; moreover, the skin color of the frilled shark is either uniformly dark-brown or uniformly grey. In addition, the Chlamydoselachus anguineus has smaller pectoral fins than the African species, and the width of the mouth is more narrow.