Dwarf siren

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Dwarf siren
Temporal range: Miocene–present
P striatus USGS.jpg
Pseudobranchus striatus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Sirenidae
Genus: Pseudobranchus
Gray, 1825
Diversity
2 extant species
Dwarf siren Range.jpg

Dwarf sirens are eel-like salamanders of the genus Pseudobranchus. Dwarf sirens possess external gills throughout adulthood and lack hind legs, and can be distinguished from members of the genus Siren in that dwarf sirens have three toes on each foot rather than four. Whereas sirens has three gill slits, dwarf sirens keeps just a single slit. [2] Like sirens, dwarf sirens are restricted to the Southeastern United States.

Contents


Species

The genus Pseudobranchus consists of the following extant species:

There are also two extinct species known from fossil evidence:

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<span class="mw-page-title-main">Sirenidae</span> Family of amphibians

Sirenidae, the sirens, are a family of neotenic aquatic salamanders. Family members have very small fore limbs and lack hind limbs altogether. In one species, the skeleton in their fore limbs is made of only cartilage. In contrast to most other salamanders, they have external gills bunched together on the neck in both larval and adult states. Sirens are found only in the Southeastern United States and northern Mexico.

<span class="mw-page-title-main">Greater siren</span> Species of amphibian

The greater siren is an amphibian and one of the three members of the genus Siren. The largest of the sirens and one of the largest amphibians in North America, the greater siren resides in the coastal plains of the southeastern United States.

<i>Siren</i> (genus) Genus of amphibians

Siren is a genus of aquatic salamanders of the family Sirenidae. The genus consists of five living species, along with one extinct species from the Eocene Epoch and three from the Miocene.

<span class="mw-page-title-main">Southern dwarf siren</span> Species of amphibian

The southern dwarf siren, is a perennibranch salamander lacking hind legs. Found exclusively in Florida, it is one of two currently recognized species of dwarf sirens. Two subspecies are currently recognized; P. a. axanthus, the narrow-striped dwarf siren, and P. a. belli, the Everglades dwarf siren.

<span class="mw-page-title-main">Northern dwarf siren</span> Species of amphibian

The northern dwarf siren is a perennibranch salamander lacking hind legs. Found in the Southeastern United States, it one of two currently recognized species of dwarf sirens. Three subspecies are currently recognized; P. s. striatus, the broad-striped dwarf siren, P. s. lustricolus, the Gulf Hammock dwarf siren, and P. s. spheniscus, the slender dwarf siren.

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References

  1. "Pseudobranchus Gray 1825 (dwarf siren)". Fossilworks. Retrieved 17 December 2021.
  2. Dwarf siren - The University of Texas at Austin