Classics revisited. History of reptile placentology: Studiati's early account of placentation in a viviparous lizard

Blackburn, Daniel G.; Avanzati, Anna Marie; Paulesu, Luana

doi:10.1016/j.placenta.2015.09.013

Cited by 5 publications

(1 citation statement)

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“…Historical aspects of works on fetal membranes and placentas have been summarized in special issues of the Journal of Morphology and the Journal of Experimental Zoology that were devoted to those subjects (Blackburn & Starck, 2015; Mess et al, 2003). Likewise, recent contributions have analyzed the content and significance of early works on placentation (e.g., Blackburn, 2016; Blackburn et al, 2015; Blackburn, Paulesu et al, 2017; Carter, 2019, 2021; Carter & Mess, 2010; Stewart & Blackburn, 2020).…”

Section: Historical Backgroundmentioning

confidence: 99%

Morphological research on amniote eggs and embryos: An introduction and historical retrospective

Blackburn

Stewart

2021

Journal of Morphology

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Evolution of the terrestrial egg of amniotes (reptiles, birds, and mammals) is often considered to be one of the most significant events in vertebrate history. Presence of an eggshell, fetal membranes, and a sizeable yolk allowed this egg to develop on land and hatch out well-developed, terrestrial offspring. For centuries, morphologicallybased studies have provided valuable information about the eggs of amniotes and the embryos that develop from them. This review explores the history of such investigations, as a contribution to this special issue of Journal of Morphology, titled Developmental Morphology and Evolution of Amniote Eggs and Embryos. Anatomically-based investigations are surveyed from the ancient Greeks through the Scientific Revolution, followed by the 19th and early 20th centuries, with a focus on major findings of historical figures who have contributed significantly to our knowledge. Recent research on various aspects of amniote eggs is summarized, including gastrulation, egg shape and eggshell morphology, eggs of Mesozoic dinosaurs, sauropsid yolk sacs, squamate placentation, embryogenesis, and the phylotypic phase of embryonic development. As documented in this review, studies on amniote eggs and embryos have relied heavily on morphological approaches in order to answer functional and evolutionary questions.

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