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The Georgetown salamander is active year-round. The Georgetown salamander is believed to reproduce in the winter, as many other Eurycea species do. [4] [6] The salamanders produce an estimated 30 to 50 eggs per clutch, but likely lay them individually. The hatchlings are about 1 cm long and grow rapidly until they reach a head-trunk length of ...
The tadpoles are 2 centimetres (0.8 in) long when they hatch and live on yolk stored in the cells of the digestive tract for a month. [ 41 ] At a temperature of 10 °C (50 °F), the olm's embryonic development (time in the eggs before hatching) is 140 days, but it is somewhat slower in colder water and faster in warmer, being as little as 86 ...
The barred tiger salamander typically grows from 7.6 to 16.5 cm (3.0 to 6.5 in), but neotenic forms can grow to lengths of 17.8 to 38.1 cm (7.0 to 15.0 in), [3] and is one of the largest species of salamander in North America. It has a broad head and a sturdy body.
Previously, it was referred to as the black salamander, and was thought to have a fragmented range across most of California and southern Oregon.However, a 2019 taxonomic study found it to represent a species complex of multiple species: the speckled black salamander (A. flavipunctatus sensu stricto), the Shasta black salamander (A. iecanus), the Santa Cruz black salamander (A. niger), and the ...
The long-toed salamander (Ambystoma macrodactylum) is a mole salamander in the family Ambystomatidae. [2] This species, typically 4.1–8.9 cm (1.6–3.5 in) long when mature, is characterized by its mottled black, brown, and yellow pigmentation, and its long outer fourth toe on the hind limbs.
Plethodon elongatus is a medium-sized, slender salamander. Adults are 6–7.5 cm (2.4–3.0 in) from snout to vent, and 11–15 cm (4.3–5.9 in) in total length. Limbs are relatively short; toes are short and slightly webbed. Dorsal coloration is dark brown or black.
Dunn's salamander is a moderately sized, terrestrial salamander. Adults measure 6–7.5 cm (2.4–3.0 in) in snout–vent length and 10–15.5 cm (3.9–6.1 in) in total length. The body is dark brown or black. A distinct broad yellowish to olive green dorsal stripe runs from the head to the tail, without reaching the tip of the tail.
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