Musango

MEANING: Living in the bush

PERIOD: Late Triassic

CONTINENT: Africa

Musango is a basal sauropodomorph dinosaur that lived during the Late Triassic period in what is now Zimbabwe. Typical of early sauropodomorphs, or "prosauropods," it was an obligate biped with a long neck, and a long tail for counterbalance. Musango grew to approximately 5 m in total body length.

Abstract from paper: The Upper Triassic Pebbly Arkose Formation of the Mid-Zambezi Basin, Zimbabwe is yielding important evidence of a diverse terrestrial/freshwater biome. A partial, associated skeleton collected from the ‘Musango Archosaur Site’, on the southern margin of Lake Kariba, represents a new taxon of sauropodomorph, Musango matusadonaensis. The specimen consists of vertebrae, pectoral and pelvic girdle elements, and partial fore- and hind limbs. It possesses numerous autapomorphies and is clearly distinct from the sympatric Musankwa sanyatiensis. Phylogenetic analysis recovers Musango and Musankwa in a sister-taxon relationship within the plateosaurian sauropodomorph clade Unaysauridae, although support for this topology is weak. Osteohistological evidence and body mass estimation indicate that the holotype individual of Musango is a small-bodied sub-adult or adult, which had reached at least eight years of age, and whose growth rate was decelerating at the time of death. Contrary to previous suggestions that there were close faunal and biostratigraphical links between the Late Triassic vertebrate faunas of Zimbabwe and South Africa, currently no dinosaur taxa are shared between the Triassic-aged sedimentary units in Zimbabwe and those of the main Karoo Basin.

Musango is from the Late Triassic. The Triassic is the first geologic period of the Mesozoic, spanning from the end of the Permian Period 252 million years ago to the beginning of the Jurassic 201 million years ago. Both the start and end of the Triassic were marked by major extinction events. In the aftermath of the devastating Permian-Triassic extinction, life gradually rebounded, giving rise to new groups that would shape the Mesozoic Era. The global climate during the Triassic was mostly hot and dry, with vast deserts dominating the interior of the supercontinent Pangea. Over time, as Pangea began to rift apart, the climate slowly became more humid, creating new environments and opportunities for ecological diversification.

For much of the Triassic, dinosaurs were not yet the dominant terrestrial animals. Instead, the land was populated by a variety of other reptiles, including sprawling archosaurs. Early synapsids, the lineage that would eventually lead to mammals, were also still present but declining. Vegetation was dominated by drought-tolerant plants such as seed ferns, cycads, ginkgoes, and early conifers. These hardy plants formed the base of recovering ecosystems during this volatile time.

It wasn't until the Late Triassic, around 230 million years ago, that the first true dinosaurs appeared. Early forms were small, bipedal, and lightly built, likely preying on insects and small vertebrates. While they remained minor players compared to other reptilian groups, their agility, upright stance, and efficient breathing gave them advantages that would prove crucial in the long run. As the Triassic drew to a close, another mass extinction event reshaped life on Earth once again, wiping out many of the dominant reptile groups and clearing the way for dinosaurs to rise to prominence in the Jurassic.

Musango is a basal sauropodomorph. Sauropodomorpha is the larger group that contains the long-necked sauropod dinosaurs. Basal sauropodomorphs, often informally referred to as "prosauropods," were early members of the lineage that eventually gave rise to the massive quadrupedal herbivores. These early sauropodomorphs thrived during the Late Triassic and Early Jurassic periods and represent some of the first large-bodied plant-eaters to evolve within Dinosauria. They were generally medium-sized, with long necks, small heads, and leaf-shaped teeth suited for a herbivorous or omnivorous diet.

Unlike their gigantic descendants, most basal sauropodomorphs were primarily bipedal, though some likely used all four limbs when moving slowly or feeding. Their forelimbs were shorter than their hindlimbs, and many had grasping hands with large claws - features that suggest a degree of versatility in both locomotion and feeding behavior. Fossil evidence of these dinosaurs has been found across much of Pangea, showing they were among the earliest dinosaur groups to achieve a widespread distribution. Though often overshadowed by the sauropods they gave rise to, these early forms played a crucial role in the rise of large-bodied herbivores and the overall success of dinosaurs in the Mesozoic.