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Title: A diminutive perinate European Enantiornithes reveals an asynchronous ossification pattern in early birds

Abstract

Fossils of juvenile Mesozoic birds provide insight into the early evolution of avian development, however such fossils are rare. The analysis of the ossification sequence in these early-branching birds has the potential to address important questions about their comparative developmental biology and to help understand their morphological evolution and ecological differentiation. Here we report on an early juvenile enantiornithine specimen from the Early Cretaceous of Europe, which sheds new light on the osteogenesis in this most species-rich clade of Mesozoic birds. Consisting of a nearly complete skeleton, it is amongst the smallest known Mesozoic avian fossils representing post-hatching stages of development. Finally, comparisons between this new specimen and other known early juvenile enantiornithines support a clade-wide asynchronous pattern of osteogenesis in the sternum and the vertebral column, and strongly indicate that the hatchlings of these phylogenetically basal birds varied greatly in size and tempo of skeletal maturation.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [6];  [7]; ORCiD logo [8]; ORCiD logo [9];  [10]; ORCiD logo [11]; ORCiD logo [8]; ORCiD logo [11]
  1. ARAID—Fundacion Conjunto Paleontologico de Teruel-Dinopolis, Teruel (Spain); Univ. of Manchester (United Kingdom). School of Earth and Environmental Sciences
  2. Natural History Museum of Los Angeles County, Los Angeles, CA (United States). Dinosaur Inst.
  3. Uppsala Univ. (Sweden). Dept. of Organismal Biology; European Synchrotron Radiation Facility (ESRF), Grenoble (France)
  4. Univ. of Manchester (United Kingdom). School of Earth and Environmental Sciences; Natural History Museum, London (United Kingdom). Dept. of Earth Sciences
  5. Univ. of Manchester (United Kingdom). School of Earth and Environmental Sciences; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  6. Univ. of Manchester (United Kingdom). School of Earth and Environmental Sciences
  7. Univ. of Manchester (United Kingdom). School of Earth and Environmental Sciences; College of Charleston, Charleston, SC (United States). Dept. of Geology and Environmental Geosciences
  8. Univ. Nacional de Educacion a Distancia, Madrid (Spain)
  9. Natural History Museum of Los Angeles County, Los Angeles, CA (United States). Dinosaur Inst.; Univ. de Malaga, Malaga (Spain)
  10. Natural History Museum of Los Angeles County, Los Angeles, CA (United States). Dinosaur Inst.; Univ. Autonoma de Madrid (Spain). Facultad de Ciencias
  11. Univ. Autonoma de Madrid (Spain). Facultad de Ciencias
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; European Union (EU)
OSTI Identifier:
1437354
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Knoll, Fabien, Chiappe, Luis M., Sanchez, Sophie, Garwood, Russell J., Edwards, Nicholas P., Wogelius, Roy A., Sellers, William I., Manning, Phillip L., Ortega, Francisco, Serrano, Francisco J., Marugan-Lobon, Jesus, Cuesta, Elena, Escaso, Fernando, and Sanz, Jose Luis. A diminutive perinate European Enantiornithes reveals an asynchronous ossification pattern in early birds. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03295-9.
Knoll, Fabien, Chiappe, Luis M., Sanchez, Sophie, Garwood, Russell J., Edwards, Nicholas P., Wogelius, Roy A., Sellers, William I., Manning, Phillip L., Ortega, Francisco, Serrano, Francisco J., Marugan-Lobon, Jesus, Cuesta, Elena, Escaso, Fernando, & Sanz, Jose Luis. A diminutive perinate European Enantiornithes reveals an asynchronous ossification pattern in early birds. United States. doi:10.1038/s41467-018-03295-9.
Knoll, Fabien, Chiappe, Luis M., Sanchez, Sophie, Garwood, Russell J., Edwards, Nicholas P., Wogelius, Roy A., Sellers, William I., Manning, Phillip L., Ortega, Francisco, Serrano, Francisco J., Marugan-Lobon, Jesus, Cuesta, Elena, Escaso, Fernando, and Sanz, Jose Luis. Mon . "A diminutive perinate European Enantiornithes reveals an asynchronous ossification pattern in early birds". United States. doi:10.1038/s41467-018-03295-9. https://www.osti.gov/servlets/purl/1437354.
@article{osti_1437354,
title = {A diminutive perinate European Enantiornithes reveals an asynchronous ossification pattern in early birds},
author = {Knoll, Fabien and Chiappe, Luis M. and Sanchez, Sophie and Garwood, Russell J. and Edwards, Nicholas P. and Wogelius, Roy A. and Sellers, William I. and Manning, Phillip L. and Ortega, Francisco and Serrano, Francisco J. and Marugan-Lobon, Jesus and Cuesta, Elena and Escaso, Fernando and Sanz, Jose Luis},
abstractNote = {Fossils of juvenile Mesozoic birds provide insight into the early evolution of avian development, however such fossils are rare. The analysis of the ossification sequence in these early-branching birds has the potential to address important questions about their comparative developmental biology and to help understand their morphological evolution and ecological differentiation. Here we report on an early juvenile enantiornithine specimen from the Early Cretaceous of Europe, which sheds new light on the osteogenesis in this most species-rich clade of Mesozoic birds. Consisting of a nearly complete skeleton, it is amongst the smallest known Mesozoic avian fossils representing post-hatching stages of development. Finally, comparisons between this new specimen and other known early juvenile enantiornithines support a clade-wide asynchronous pattern of osteogenesis in the sternum and the vertebral column, and strongly indicate that the hatchlings of these phylogenetically basal birds varied greatly in size and tempo of skeletal maturation.},
doi = {10.1038/s41467-018-03295-9},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {3}
}

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Cited by: 3 works
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Figures / Tables:

Fig. 1 Fig. 1: Overview photographs of the slab and counterslab of MPCM-LH-26189. Slab a is on the left, slab b, on the right. The two red boxes indicate the localisation of the areas analysed histologically (Fig. 3). Abbreviations: An: angular, Ar: articular, CaV: caudal vertebrae, CeV: cervical vertebrae, Co: coracoid, De:more » dentary, DoV: dorsal vertebrae, Fe: femur, Fr: frontal, Ga: gastralium, Hu: humerus, Hy: hyoid, Is: ischium, Ju: jugal, MiMC: minor metacarpal, Pu: pubis, Qu: quadrate, Ra: radius, Ri: rib, Sa: surangular, Sp: splenial, SaV: sacral vertebrae, SR: sclerotic ring, St: sternum, Ti: tibia, Ul: ulna« less

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.