INVESTIGADORES
PAULINA CARABAJAL ariana
artículos
Título:
The skull of the Miocene Spheniscus urbinai (Aves, Sphenisciformes): osteology, brain morphology, and the cranial pneumatic systems
Autor/es:
ACOSTA HOSPITALECHE, C.; PAULINA CARABAJAL, A.; YURI-YÁÑEZ, R.
Revista:
JOURNAL OF ANATOMY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2021
ISSN:
0021-8782
Resumen:
Spheniscusurbinai represents one of four extinct Spheniscus species from the Cenozoic of SouthernSouth America, known from several poorly described diversely complete skulls andpostcranial elements. Here we present a review of the cranial osteology of allknown specimens (collected in Argentina, Chile and Peru), including the first paleoneurologicalanalysis using CT scans, and an exploration of its cranial pneumaticity comparedto other extinct and living seabirds. Our results show that among Spheniscus species, S. urbinai exhibits slightly greater cranial pneumaticity than theliving species. Additionally, we confirm previous findings which indicate that themarked reduction of cranial pneumaticity ?which is characteristic of living penguins-occurred early during the Eocene (as observed in the Antarctic penguin MLP12-I-20-1, but not in the coeval Anthropornis).
