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Notophthalmus species are East American newts similar in shape to the European newts (cf. Triturus). As a distinct characteristic of their own, both sexes have three to four large pores that lie in a row on the temple. The skin is smooth and soft in the water form and the tail is strongly flattened laterally.
Previously, these species were classified under the subgenus Neotriton within the genus Triturus. It included the group of northern crested newts and the group of marbled newts. The presence of the same genetic defect is considered evidence of their close relationship – they together form a single monophyletic developmental line. This view ...
[citation needed] Several species, such as the Edough ribbed newt (Pleurodeles poireti), Kaiser's spotted newt (Neurergus kaiseri), or the Montseny brook newt (Calotriton arnoldi) are considered threatened by the IUCN, and the Yunnan lake newt is an example of a newt species that has gone extinct recently. [39]
Researchers describe the new species as having "large" eyes and "v"-shaped teeth, according to a new peer-reviewed study A New Species of 'Crocodile Newt' Has Been Discovered — Here’s What ...
Notophthalmus meridionalis, the black-spotted newt or Texas newt, is a species of aquatic newt native to northeastern Mexico and southern Texas in the United States. [ 1 ] [ 2 ] This amphibian was put on the IUCN Red List of Endangered Species in 2008 with populations still decreasing.
Eastern newts have a lifespan of about 8–10 years in the wild, but some individuals have been known to live up to 15 years. [6] Eastern newts have three stages of life: (1) the aquatic larva or tadpole, (2) the red eft or terrestrial juvenile stage, and (3) the aquatic adult.
Tylototriton ngoclinhensis is a moderate-sized and robust species of newt, with a snout-vent length ranging from 60.8 to 66.5 mm in males and 72.5-75.6 mm in females. [3] Tail lengths range from 57.6 to 61.8 mm in males and 62.9–67.9 mm in females. [3] Males are thought to be smaller than females.
The rough-skinned newt (Taricha granulosa) uses tetrodotoxin and is considered the most poisonous species of newt. There are species and sub-species of Taricha that live in concurrent regions with a garter snake (Thamnophis) that has developed a resistance to the TTX poisoning. Species that inhabit regions with resistant Thamnophis snakes have ...