Gyposaurus
Genus of basal sauropodomorph dinosaur from the early Jurassic.
Gyposaurus, meaning "vulture lizard," gets its name from an old, now-rejected idea that prosauropods were meat-eaters. This genus of basal sauropodomorph dinosaur lived during the early Jurassic in what is now South Africa. Most scientists think the fossils assigned to Gyposaurus are actually young individuals of other prosauropods, though one species, "G." sinensis, might be a valid, separate dinosaur.
The first species, G. capensis, was described in 1911 by Robert Broom, a Scottish doctor and paleontologist. He based it on a partial skeleton found in the Upper Elliot Formation of South Africa's Orange Free State, which included vertebrae, ribs, parts of the shoulder and hip, and most of a right leg. Broom initially thought the remains belonged to the questionable genus Hortalotarsus. Later, in 1976, Galton and Cluver moved it to Anchisaurus, but Michael Cooper synonymized it with Massospondylus in 1981—a view that is now widely accepted.
The other species, "G." sinensis, was named in 1941 by Yang Zhongjian (C.C. Young) from four specimens found in the early Jurassic Lufeng Formation of Yunnan, China. These included jaw fragments and postcranial bones. In 1976, Galton assigned it to Lufengosaurus, while Dong Zhiming put it in Anchisaurus in 1992. Galton and Upchurch (2004) thought it was a valid species needing a new genus name. Barrett and colleagues proposed "Gripposaurus" in 2007, but that name was never formally published. Unpublished work from a 2017 conference presentation by Wang and colleagues suggested "G." sinensis is actually a junior synonym of Lufengosaurus huenei, though some referred specimens still need more study. Wang, Zhao, and You (2024) agreed with that conclusion.
Quick Facts
- Taxon
- Gyposaurus
- Type Species
- Gyposaurus capensis
- Type Species Authority
- Broom, 1911
Facts from the source article.
Lore & Background
Gyposaurus was named in 1911 by Scottish physician and paleontologist Robert Broom from a partial skeleton discovered in the Upper Elliot Formation of Orange Free State, South Africa. The specimen included eleven dorsal and six caudal vertebrae, ribs, gastralia, partial right scapula, right pelvic girdle, left ilium, and most of the right leg. Broom originally thought the specimen belonged to the dubious genus Hortalotarsus. Later, Galton and Cluver placed it in the genus Anchisaurus in 1976, but Michael Cooper synonymized it with Massospondylus in 1981, which has been generally accepted.
"G." sinensis was named by Yang Zhongjian (C.C. Young) in 1941 for four specimens including jaw fragments and postcranial material from the Early Jurassic Lufeng Formation of Yunnan Province, China. In 1976, Galton referred it to Lufengosaurus, while Dong Zhiming referred it to Anchisaurus in 1992. Galton and Upchurch (2004) considered it to be a valid, distinct taxon in need of a new generic name. Barrett et al. (2007) proposed the name "Gripposaurus" for this species, but it is a nomen nudum.
Reader's Guide
Gyposaurus holds a complex taxonomic history, reflecting the challenges of classifying early sauropodomorph dinosaurs. The type species, G. capensis, is now generally accepted as a synonym of Massospondylus, following Michael Cooper's 1981 work. This underscores the difficulty of distinguishing juvenile specimens from distinct taxa in the fossil record. The Chinese species "G." sinensis remains a point of contention: while some researchers consider it a valid taxon needing a new generic name, unpublished results from a 2017 SVP presentation and a 2024 study by Wang, Zhao & You suggest it is a junior synonym of Lufengosaurus huenei, though some referred specimens require further study. The genus name itself, meaning "vulture lizard," highlights an outdated hypothesis that prosauropods were carnivores. Gyposaurus thus serves as a case study in how taxonomic revisions and new discoveries continually reshape our understanding of dinosaur evolution.
Did You Know?
- Gyposaurus means "vulture lizard," referring to the outdated hypothesis that prosauropods were carnivores.
- Barrett et al. (2007) proposed the name "Gripposaurus" for "G." sinensis, but it is a nomen nudum.
Frequently Asked Questions
What does the name Gyposaurus actually mean?
It translates to "vulture lizard," a nod to an outdated hypothesis that prosauropods were carnivorous. That idea has since been firmly rejected in favor of a herbivorous diet for these early sauropodomorphs.
Who first described Gyposaurus and when?
Robert Broom, a Scottish physician turned paleontologist, named the genus in 1911 based on a partial skeleton recovered from the Upper Elliot Formation in South Africa.
Where and when did Gyposaurus live?
The fossils come from early Jurassic deposits in South Africa, with one additional species, "G." sinensis, known from China. That places the animal roughly 190–200 million years ago.
Is Gyposaurus still considered a valid genus?
Most paleontologists now regard the original material as simply juvenile specimens of other, better-known prosauropods. However, "G." sinensis is still debated and may represent a genuinely distinct dinosaur.
Why do fans and paleontology students still talk about Gyposaurus?
It serves as a handy shorthand for the very earliest, most basal sauropodomorph body plan and as a cautionary tale about how taxonomic assignments shift as more complete skeletons are found. Its name also preserves a fun piece of paleontological history—the old "vulture" misconception.
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