---
title: "Mysterious 240-Million-Year-Old Animal: Remains Sat in a Museum for 60 Years"
description: "Scientists have discovered a new species of ancient herbivore dating back 240 million years, whose remains spent over 60 years in a museum."
date: 2026-09-26T11:59:56.000Z
lang: en
url: https://xab.info/en/posts/mysterious-240-million-year-old-animal-remains-in-museum
tags: [paleontology, dinodontosaurus, synapsids, tanzania, ancient-animals]
publisher: "XAB.info"
---

# Mysterious 240-Million-Year-Old Animal: Remains Sat in a Museum for 60 Years

![Remains of the ancient animal Dinodontosaurus isiyavamanda in a museum](https://xab.info/media/2026/09/26/tainstvennoe-zhivotnoe-240-millionov-let-ostanki-v-muzee/tainstvennoe-zhivotnoe-240-millionov-let-ostanki-v-muzee-1.webp)

## 🎯 Key Points

- A new synapsid species, Dinodontosaurus isiyavamanda, has been discovered.
- The find is approximately 240 million years old.
- Some fossils spent over 60 years in museum storage.
- Previously, similar remains were found exclusively in South America.

Paleontologists have made an astonishing discovery, describing a new species of ancient creature that inhabited our planet about 240 million years ago. The new species has been named Dinodontosaurus isiyavamanda and is a herbivorous animal belonging to the group of synapsids. It is important to note that synapsids are not dinosaurs, but distant relatives of modern mammals, making this find particularly valuable for studying the phylogenetic tree.

### History of Discovery and Museum Collections

The most intriguing aspect of this scientific breakthrough is the fact that some of the fossils were excavated back in 1963 during early expeditions. For more than sixty years, these unique bones gathered dust in museum archives, waiting for their time and the advent of modern analytical methods. Only recently have researchers conducted a detailed re-examination of the collections, comparing old samples with new field finds in Tanzania.

### Evolutionary Significance and Zoogeography

Until recently, it was believed that such organisms lived exclusively on the territory of the ancient supercontinent Gondwana in its South American part. The discovery of Dinodontosaurus isiyavamanda remains in Tanzania fundamentally changes scientists' understanding of the migration and habitat of these herbivores. This proves that ancient synapsids were much more widely distributed across the African continent than previously assumed.

### Controversial Data

During the initial analysis of the materials, discussions arose regarding the exact classification within the dinodontosaurids and the timing of their migration between South America and Africa. Some researchers point to morphological differences between the Tanzanian and South American samples, suggesting parallel evolution in isolated ecosystems. Other experts insist on a single continuous habitat, arguing this based on similarities in jaw structure and teeth.

### Prospects for Further Research

The discovery underscores the colossal potential of revising old museum collections using computed tomography and isotope analysis technologies. Scientists hope that further excavations in East Africa will help close gaps in the paleontological record of the period preceding the age of dinosaur dominance.

## 🔍 Fact-Check Verification

- [Таинственное животное, жившее 240 миллионов лет назад: его останки 60 лет пролежали в музее – Zamin.uz, 26.09.2026](https://zamin.uz/ru/mir/222622-tainstvennoe-zhivotnoe-zhivshee-240-millionov-let-nazad-ego-ostanki-60-let-prolezhali-v-muzee.html) - Описано открытие нового вида Динодонтосаурус исияваманда в Танзании с учетом исторических музейных фондов.

## ❓ FAQ

### Q: What group of animals does Dinodontosaurus isiyavamanda belong to?
**A:** It is a herbivorous animal from the synapsid group, which are relatives of modern mammals rather than dinosaurs.

### Q: How long did the remains stay in the museum?
**A:** Some fossils were found in 1963 and remained in museum collections for over 60 years before being re-examined.