ArticleAmerican journal of human biology : the official journal of the Human Biology Council2025
Revealing Developmental Transitions in Perinatal and Infant Individuals Through Microanatomical Analysis.
Article in American journal of human biology : the official journal of the Human Biology Council, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Revealing Developmental Transitions in Perinatal and Infant Individuals Through Microanatomical Analysis.American journal of human biology : the official journal of the Human Biology Council · 2025Article
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6 authors.
Funding
Abstract
objectivesIdentifying signs of birth in perinatal human remains of past populations is challenging due to the lack of direct markers of this event on bones. This research aims to identify distinct events in humeral cross-sections microanatomy related to perinatal development and to integrate the findings into infant mortality trends. MATERIAL AND
methodsThe sample consists of infants (N = 106) ranging from prenatal to 1.5 years, with microanatomical analysis of nine selected individuals. Age-at-death estimation and microanatomical characterization were conducted, combined with quantitative analysis of microanatomical features.
resultsBiological age-at-death presents high variability and overlap across prenatal to postnatal stages. Microanatomical analysis reveals a higher percentage of mineralized areas (60%-80%) within the total cross-sectional area in the youngest individuals up to the first neonatal month.
conclusionsBased on the integration of microanatomical analysis in an extensive infant sample, this study highlights the evidence of developmental transitions from prenatal to neonatal stages. These findings suggest that, unlike biological age estimation methods, the full-term period can be identified microanatomically in bone. This provides a valuable approach for analyzing fragmented skeletal remains, secondary deposits, and other funerary or osteological contexts, opening new pathways to understand gestational development and postnatal survival in past populations.
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