---
title: "New Ice Age Toad Species Identified in La Brea Tar Pits Fossils"
url: https://projectchintan.com/article/new-ice-age-toad-species-la-brea-tar-pits-2xv0s
publisher: Project Chintan
author: Project Chintan Newsroom
section: Science & Technology
published: 2026-08-14T13:47:22.506Z
modified: 2026-08-14T16:00:07.125Z
language: en-IN
---

# New Ice Age Toad Species Identified in La Brea Tar Pits Fossils

Fossils discovered in the 1950s at the La Brea Tar Pits have been identified as a new species of Ice Age spadefoot toad, named Spea labreae. The find offers insights into climate changes at the end of the last Ice Age and expands the North American amphibian fossil record.

## Key takeaways

- A new Ice Age toad species, Spea labreae, has been identified from fossils found in the La Brea Tar Pits.
- The discovery provides insights into climate changes at the end of the last Ice Age.
- Fossils of the Mexican burrowing toad were also found, marking its first appearance in the southwestern U.S.
- The La Brea Tar Pits' natural asphalt provides exceptional preservation conditions for delicate fossils.

Paleontologists have identified a previously unknown species of spadefoot toad from fossils recovered from the La Brea Tar Pits in Los Angeles, California. The new species, named Spea labreae, was found among specimens collected in the 1950s. This discovery contributes to the understanding of North American amphibian fossils and provides information on climate shifts during the last Ice Age.

The research, published in the Journal of Vertebrate Paleontology, involved paleontologist Alberto Cruz of Mexico's National Institute of Anthropology and History (INAH). Cruz discovered S. labreae while examining the La Brea Tar Pits' archive of fossilized reptiles and amphibians. He compared the specimens with existing amphibian records at UC Berkeley and the Natural History Museum of Los Angeles County, noting that S. labreae is larger than currently living related toad species.

## Fossil's Climate Significance

The fossilized toad offers clues about the ancient climate conditions of the late Ice Age. Amphibians are highly sensitive to environmental changes, and their well-preserved remains can indicate shifts in temperature, vegetation, and overall climate. Cruz noted that changes in the environment, such as temperature fluctuations, directly impact these animals.

Additionally, the study identified a fossil of the Mexican burrowing toad (Rhinophrynus). This marks the first discovery of this species in the southwestern United States, as living populations are now found only in southern Mexico.

## La Brea Tar Pits' Preservation

The La Brea Tar Pits are a unique site for fossil preservation due to their natural asphalt. The sticky asphalt traps and saturates the bones of animals, preventing their decay and allowing for the preservation of even fragile amphibian remains, which are rarely found as fossils. Emily Lindsey, a curator at the Samuel Oschin Global Center for Ice Age Research at La Brea Tar Pits, stated that new discoveries continue to emerge from the site, even after extensive research over the past century.

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Canonical: https://projectchintan.com/article/new-ice-age-toad-species-la-brea-tar-pits-2xv0s
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