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dc.contributor.author
Kundrát, Martin
dc.contributor.author
Coria, Rodolfo Anibal
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dc.contributor.author
Manning, Terry W.
dc.contributor.author
Snitting, Daniel
dc.contributor.author
Chiappe, Luis
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dc.contributor.author
Nudds, John
dc.contributor.author
Ahlberg, Per E.
dc.date.available
2022-01-25T17:50:31Z
dc.date.issued
2020-11-02
dc.identifier.citation
Kundrát, Martin; Coria, Rodolfo Anibal; Manning, Terry W.; Snitting, Daniel; Chiappe, Luis; et al.; Specialized Craniofacial Anatomy of a Titanosaurian Embryo from Argentina; Cell Press; Current Biology; 30; 21; 2-11-2020; 4263-4269
dc.identifier.issn
0960-9822
dc.identifier.uri
http://hdl.handle.net/11336/150635
dc.description.abstract
The first dinosaur embryos found inside megaloolithid eggs from Auca Mahuevo, Patagonia, were assigned to sauropod dinosaurs that lived approximately 80 million years ago. Discovered some 25 years ago, these considerably flattened specimens still remain the only unquestionable embryonic remains of a sauropod dinosaur providing an initial glimpse into titanosaurian in ovo ontogeny. Here we describe an almost intact embryonic skull, which indicates the early development of stereoscopic vision, and an unusual monocerotic face for a sauropod. The new fossil also reveals a neurovascular sensory system in the premaxilla and a partly calcified braincase, which potentially refines estimates of its prenatal stage. The embryo was found in an egg with thicker eggshell and a partly different geochemical signature than those from the egg-bearing layers described in Auca Mahuevo. The cranial bones are comparably ossified as in previously described specimens but differ in facial anatomy and size. The new specimen reveals significant heterochrony in cranial ossifications when compared with non-sauropod sauropodomorph embryos, and demonstrates that the specialized craniofacial morphology preceded the postnatal transformation of the skull anatomy in adults of related titanosaurians.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cell Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
DEVELOPMENT
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EGG
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EMBRYO
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EVOLUTION
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PATAGONIA
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SKULL
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SYNCHROTRON MICROTOMOGRAPHY
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TITANOSAURIA
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UPPER CRETACEOUS
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Specialized Craniofacial Anatomy of a Titanosaurian Embryo from Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-01-25T14:42:06Z
dc.identifier.eissn
1879-0445
dc.journal.volume
30
dc.journal.number
21
dc.journal.pagination
4263-4269
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Kundrát, Martin. Pavol Jozef Šafárik University; Eslovaquia. Uppsala Universitet; Suecia
dc.description.fil
Fil: Coria, Rodolfo Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina. Universidad Nacional de Río Cuarto; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina
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Fil: Manning, Terry W.. Freelance Paleo Technician; Estados Unidos
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Fil: Snitting, Daniel. Uppsala Universitet; Suecia
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Fil: Chiappe, Luis. Natural History Museum of Los Angeles County; Estados Unidos
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Fil: Nudds, John. University of Manchester; Reino Unido
dc.description.fil
Fil: Ahlberg, Per E.. Uppsala Universitet; Suecia
dc.journal.title
Current Biology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0960982220311507
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cub.2020.07.091
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