| Full text | |
| Author(s): |
Neves, Walter
;
Rocha, Gabriel
;
Senger, Maria h.
;
Hubbe, Mark
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Anais da Academia Brasileira de Ciências; v. 96, n. 3, p. 11-pg., 2024-01-01. |
| Abstract | |
Sahelanthropus tchadensis has raised much debate since its initial discovery in Chad in 2001, given its controversial classification as the earliest representative of the hominin lineage. This debate extends beyond the phylogenetic position of the species, and includes several aspects of its habitual behavior, especially in what regards its locomotion. The combination of ancestral and derived traits observed in the fossils associated with the species has been used to defend different hypotheses related to its relationship to hominins. Here, the cranial morphology of Sahelanthropus tchadensis was assessed through 16 linear craniometric measurements, and compared to great apes and hominins through Principal Component Analysis based on size and shape and shape information alone. The results show that S. tchadensis share stronger morphological affinities with hominins than with apes for both the analysis that include size information and the one that evaluates shape alone. Since TM 266-01-060-1 shows a strong morphological affinity with the remaining hominins represented in the analysis, our results support the initial interpretations that S. tchadensis represents an early specimen of our lineage or a stem basal lineage more closely related to hominins than to Panini . (AU) | |
| FAPESP's process: | 22/13878-3 - CRANIAL MORPHOLOGY DURING HUMAN EVOLUTION: THREE QUESTIONS STILL OPEN |
| Grantee: | Gabriel Rocha da Silva |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 22/13462-1 - Morphological Affinities of the mandibles from Dinaledi (South Africa), Malapa (South Africa), Ledi-Geraru (Ethiopia) and Dmanisi (Georgia) with others homininins fossils from the Plio-Pleistocene: a multivariated analysis. |
| Grantee: | Maria Helena Madalosso Senger |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |