What alternative classification was proposed around 1989 for *Xenotarsosaurus* due to taxonomic uncertainty?
Answer
Indeterminate neoceratosaurian theropod
The classification of *Xenotarsosaurus* has experienced some debate owing to the scarcity of its fossil evidence, particularly the complete lack of skull features. In 1989, some researchers expressed taxonomic uncertainty and suggested an alternative placement. They proposed that, without definitive cranial characteristics, the genus should be classified as an *indeterminate neoceratosaurian theropod*. This proposal highlights the difficulty in definitively placing specimens when only fragmented skeletal elements, which might share homologous structures with related groups, are available for study.
Related Questions
What does the generic name *Xenotarsosaurus* translate to based on its Greek roots?Which paleontologist was honored by the specific name *bonapartei*?In which Argentine geological feature were the *Xenotarsosaurus* fossils primarily discovered?What two specific bones in the *Xenotarsosaurus* ankle were found completely fused in the type specimen?What functional adaptation is theorized for the highly fused ankle structure in *Xenotarsosaurus*?What two types of skeletal elements constitute the limited known type specimens of *Xenotarsosaurus*?Which titanosaurian sauropod is mentioned as existing within the same ancient South American ecosystem as *Xenotarsosaurus*?What was the precisely measured length of the recovered right hind limb femur of *Xenotarsosaurus*?What alternative classification was proposed around 1989 for *Xenotarsosaurus* due to taxonomic uncertainty?What is the higher weight estimate cited in the comparative table for *Xenotarsosaurus*?The initial assignment of *Xenotarsosaurus* to Abelisauridae was based on hind leg similarities with which specific relative?What was the lower estimated length provided for *Xenotarsosaurus* in the size comparison table?