Mastodon fossils discovered in Argentina and California

Significant paleontological discoveries have been reported in South America and the United States involving mastodon remains.

In San Pedro, Argentina, specialists from the Fray Manuel de Torres Paleontological Museum discovered a 2.34-meter-long tusk belonging to the species Notiomastodon platensis. Found in the Bajo del Tala area, the specimen dates back approximately 500,000 years to the Pleistocene epoch. Experts state this is the longest complete mastodon tusk documented in South America to date, surpassing previous regional records.

In California, a well-preserved Pacific mastodon tooth was discovered in a stream within San Mateo County. Found by geomorphologist Brigid Lynch during habitat restoration work, the specimen includes both the crown and the roots. The tooth has been donated to Stanford University, where researchers intend to determine its exact age and create 3D models for educational purposes.