title: Ontogeny and miniaturization of Alvarezsauridae (Dinosauria, Theropoda)
metadata.name: dc.contributor.author
metadata.value: Averianov, Alexander
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Skutschas, Pavel
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Lopatin, Alexey
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2023-08-24T10:59:48Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2023-08-24T10:59:48Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2023-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Averianov, A., Skutschas, P., and Lopatin, A. 2023. Ontogeny and miniaturization of Alvarezsauridae (Dinosauria, Theropoda). Bio. Comm. 68(2): 65–73. https://doi.org/10.21638/spbu03.2023.201
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu03.2023.201
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/43873
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The ontogenetic status of the known specimens of alvarezsaurid theropod dinosaurs
  is revised. We present histological data that the holotype of Parvicursor
  remotus from the Upper Cretaceous Barungoyot Formation of Mongolia is not
  an adult individual, as previously thought, but a juvenile less than one year
  old. The miniaturization took place only in the Late Cretaceous Asiatic Parvicursorinae,
  whereas the Late Cretaceous South American non-parvicursorine
  alvarezsaurids were large animals. The miniaturization occurred by shifting
  ossification to earlier ontogenetic stages, in particular, by the closure of the
  neurocentral sutures on the presacral vertebrae of juvenile animals. There is
  no morphological support for the myrmecophagy in the alvarezsaurids and a
  shift to a myrmecophagous ecological niche does not explain the need for miniaturization.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This work was supported by
  the Russian Science Foundation, project
  No. 19‑14-00020P, and the Zoological
  Institute, Russian Academy of Sciences,
  project No. 122031100282-2.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Biological Сommunications;Volume 68; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: Dinosauria
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Theropoda
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Alvarezsauridae
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: ontogeny
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: miniaturization
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Ontogeny and miniaturization of Alvarezsauridae (Dinosauria, Theropoda)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 01.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/43873/1/01.pdf
resources.format: Adobe PDF
resources.size: 6,7 MB