Postnatal craniofacial ontogeny in neandertals and modern humans

Williams, Frank; Cofran, Zachary

doi:10.1002/ajpa.22895

Cited by 7 publications

(4 citation statements)

References 54 publications

(76 reference statements)

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“…therefore, it appears that occipital bun morphology was established by an early age. This observation complements the findings of Ponce de León and Zollikofer (2001) and Williams and Cofran (2016), who argued that many typical Neandertal traits appeared early in development, possibly even prenatally.…”

Section: The Fossil Connectionsupporting

confidence: 88%

“…Several previous studies found the ontogenetic trajectories of Neandertals and modern humans to be parallel (Krovitz, 2000;Ponce de León and Zollikofer, 2001;Ackerman and Krovitz, 2002;Zollikofer and Ponce de Leon, 2004;Freidline et al, 2012), while other studies found the postnatal trajectories of the two species to follow different slopes (Krovitz, 2003;Cobb and O'Higgins, 2004;Bastir et al, 2007;Zollikofer, 2012;Williams and Cofran, 2016). These studies all agree, however, that significant morphological differences between the two species are established early in developmenteither prenatally or very early in postnatal development.…”

Section: The Fossil Connectionmentioning

confidence: 55%

“…Studies that do mention juvenile occipital buns typically only cite whether the feature is present or absent in certain subadult fossil specimens (Trinkaus and LeMay, 1982;Minugh-Purvis, 1988;Ponce de León and Zollikofer, 1999;Cartmill and Smith, 2009;Gunz and Bulygina, 2012). While several recent studies have assessed aspects of Neandertal and/or anatomically modern human cranial anatomy in both adult and juvenile Homo (Bruner et al, 2003;Caspari, 2006;Bastir et al, 2007;Balzeau and Rougier, 2010;Balzeau and Rougier, 2013;Williams and Cofran, 2016), these studies do not discuss occipital bun ontogeny. This lack of attention regarding juvenile occipital bun morphology and developmental patterning has left a gap in our knowledge of the feature's phylogenetic, functional, and adaptive significance.…”

Section: List Of Tablesmentioning

confidence: 99%

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The ontogeny of occipital bone convexity in a longitudinal sample of extant humans

Karban¹

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I would also like to acknowledge my fellow graduate students at The University of Iowa, all of whom have shaped my work and provided valuable guidance and moral support over the past five years. I would specifically like to thank Dr. Christina Nicholas for her wise advice and friendship. Thank you to my fellow "Guilt Guild" members, Meredith Wismer-Lanoë, Shelby Putt, and Teddy Marks, for providing accountability during my last semester of dissertation writing. And finally, I would like to thank my family and friends for their patience, love, and encouragement during my graduate education. Thank you to my grandmother, Martha Scharfenberg, and my uncle, Chuck Scharfenberg, for instilling in me the desire to learn and the stubbornness to make it through graduate school. I would also like to thank my sister, Megan Boveri, for her brilliant writing suggestions. And last, but certainly not least, I would like to thank my husband John for believing in me during my weakest moments, for encouraging me to do my best, and for helping me stay grounded.

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Section: The Fossil Connectionsupporting

confidence: 88%

Section: The Fossil Connectionmentioning

confidence: 55%

Section: List Of Tablesmentioning

confidence: 99%

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The ontogeny of occipital bone convexity in a longitudinal sample of extant humans

Karban¹

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“…After some improvements over the years, the MMD turns out to be of wide use in anthropology when non-metric traits are used (Green, & Suchey, 1976;Rothhammer, Quevedo, Cocilovo, & Llop, 1984;Hanihara, Ishida, & Dodo, 2003;Sutter, & Mertz, 2004;Schillaci, Irish, & Wood, 2009;Williams, & Cofran, 2016). Furthermore, the use of non-metric traits and the MMD has been spread to other scientific field such as biology to study fauna (Sikorski,1982;Ansorge, 2001;Ansorge, Ranyuk, Kauhala, Kowalczyk & Stier, 2009), and even in informatics (Suryakan, & Mahara, 2016).…”

Section: Introductionmentioning

confidence: 99%

A Parametric Bootstrap for the Mean Measure of Divergence

Zertuche¹,

Peñaloza²

2019

Preprint

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For more than 50 years the Mean Measure of Divergence (MMD) has been one of the most prominent tools used in anthropology for the study of non-metric traits. However, one of the problems, in anthropology including palaeoanthropology (more often there), is the lack of big enough samples or the existence of samples without sufficiently measured traits. Since 1969, with the advent of bootstrapping techniques, this issue has been tackled successfully in many different ways. Here, we present a parametric bootstrap technique based on the fact that the transformed θ, obtained from the Anscombe transformation to stabilize the variance, nearly follows a normal distribution with zero mean and variance σ 2 = 1/(N + 1/2), where N is the size of the measured trait. When the probabilistic distribution is known, parametric procedures offer more powerful results than non-parametric ones. We profit from knowing the probabilistic distribution of θ to develop a parametric bootstrapping method. We explain it carefully with mathematical support. We give examples, both with artificial data and with real ones. Our results show that this parametric bootstrap procedure is a powerful tool to study samples with scarcity of data.

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Early Neanderthal mandibular remains from Baume Moula‐Guercy (Soyons, Ardèche)

Richards,

Jabbour,

Guipert

et al. 2024

The Anatomical Record

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We provide an ontogenetically‐based comparative description of mandibular remains from Last Interglacial deposits (MIS 5e) at Baume Moula‐Guercy and examine their affinities to European and Middle Eastern Middle‐to‐Late Pleistocene (≈MIS 14—MIS 1) Homo. Description of the M‐G2‐419 right partial mandibular corpus with M1‐3 (15–16.0 years ±0.5 years) and mandibular fragments M‐F4‐77 and M‐S‐TNN1 is with reference to original fossils, casts, CT scans, literature descriptions, and virtual reconstructions. Our comparative sample is ontogenetically based and divided into a Preneanderthal—Neanderthal group and a Homo sapiens group. These groups are subdivided into (1) Preneanderthals (≈MIS 14‐9), Early Neanderthals (MIS 7‐5e), and Late Neanderthals (MIS 5d‐3), and (2) Middle (MIS 5) and Upper (MIS 3‐Pre‐MIS 1) Paleolithic and recent H. sapiens. Standard techniques were employed for developmental age and sex determinations and measurements. The M‐G2‐419 mandible possesses corpus features that link it most closely with the Sima de los Huesos Preneanderthal and Early Neanderthal groups. These include mental foramen position, number, and height on the corpus, anterior marginal tubercle position, and mylohyoid line orientation. Metrically, the M‐G2‐419 mandibular corpus is small relative to adults in all groups, but the thickness/height relationship is like the adult condition. The thickness of the corpus is more like Neanderthal children than adolescents. Molar crown features suggest affinities with the Preneanderthal—Neanderthal group. The Moula‐Guercy mandibles possess a combination of Neanderthal‐associated features that provides insights into MIS 7‐5e paleodeme variation and the timing of appearance of MIS 5d‐3 Neanderthal facial features.

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Postnatal craniofacial ontogeny in neandertals and modern humans

Cited by 7 publications

References 54 publications

The ontogeny of occipital bone convexity in a longitudinal sample of extant humans

The ontogeny of occipital bone convexity in a longitudinal sample of extant humans

A Parametric Bootstrap for the Mean Measure of Divergence

Early Neanderthal mandibular remains from Baume Moula‐Guercy (Soyons, Ardèche)

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