Names with citations in year 1956
- Class: Amphibia Gray, 1825
- Synonym: Urodelidia Huene, 1956
- Order: Anura Fischer von Waldheim, 1813
- Order: Caudata
- Family: Ambystomatidae
- Family: Plethodontidae
- Subfamily: Hemidactyliinae
- Subfamily: Plethodontinae
- Genus: Desmognathus
- Species: Desmognathus marmoratus (Moore, 1899)
- Synonym: Leurognathus marmorata aureata Martof, 1956
- Synonym: Leurognathus marmorata melania Martof, 1956
- Synonym: Leurognathus marmorata roborata Martof, 1956
- Genus: Plethodon
- Species: Plethodon angusticlavius Grobman, 1944
- Synonym: Plethodon dorsalis angusticlavius — Thurow, 1956
- Species: Plethodon dorsalis Cope, 1889
- Synonym: Plethodon dorsalis dorsalis — Thurow, 1956
- Species: Plethodon nettingi Green, 1938
- Synonym: Plethodon richmondi nettingi — Highton and Grobman, 1956
- Species: Plethodon richmondi Netting and Mittleman, 1938
- Synonym: Plethodon richmondi popei Highton and Grobman, 1956
- Synonym: Plethodon richmondi richmondi — Highton and Grobman, 1956
- Species: Plethodon serratus Grobman, 1944
- Synonym: Plethodon cinereus polycentratus Highton and Grobman, 1956
- Species: Plethodon welleri Walker, 1931
- Synonym: Plethodon welleri ventromaculatum Thurow, 1956
- Synonym: Plethodon welleri welleri — Thurow, 1956
- Family: Salamandridae