Results 91 to 100 of about 13,333 (226)

Osteometry of Duck Species in Northwestern Europe—A Reassessment of Woelfle's (1967) Dataset

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT This study revisits and expands upon Elisabeth Woelfle's (1967) foundational analysis of bone morphology and osteometry, which has long been a key reference for zooarcheological identification of duck species in northwestern Europe. By examining Woelfle's unpublished measuring protocols and incorporating 523 newly measured specimens, we ...
Per G. P. Ericson, Nadja Pöllath
wiley   +1 more source

Principle features of the cranial osteology of Milvago chimango (Vieillot, 1816) and Milvago chimachima (Vieillot, 1816) (Aves: Falconidae)

open access: yesBiotemas, 2015
Knowledge of details of the cranial osteology of Milvago chimango and M. chimachima helps to ensure the monophyly of genus when compared to other birds and falcons.
Anderson Guzzi   +4 more
doaj  

Why sauropods had long necks; and why giraffes have short necks [PDF]

open access: yes, 2012
The necks of the sauropod dinosaurs reached 15 m in length: six times longer than that of the world record giraffe and five times longer than those of all other terrestrial animals.
Taylor, Michael P., Wedel, Mathew J.
core   +5 more sources

Cement Lines are Stiffer and Harder than Bone but Exhibit Different Mineral–Mechanics Relationships due to Thicker and Shorter Mineral Particles

open access: yesSmall Structures, EarlyView.
Bone's complex hierarchical structure contains many internal interfaces, including the cement line (CL) around osteons. This article shows that the CL is stiffer and harder than surrounding bone but has different mineral–mechanics relationships. These findings challenge the view of the CL as a soft, protective interface and provide insights for ...
Astrid Cantamessa   +11 more
wiley   +1 more source

Five new species of Pristimantis (Anura: Strabomantidae) from the coastal cloud forest of the Península de Paria, Venezuela

open access: yesJournal of Threatened Taxa, 2015
Fieldwork in the cloud forest of Venezuela’s remote Península de Paria in 2001 resulted in the collection of several specimens that could unquestionably be classified as members of the genus Pristimantis.
Hinrich Kaiser   +4 more
doaj   +3 more sources

Petrosaurus [PDF]

open access: yes, 1990
Number of Pages: 2Integrative BiologyGeological ...
Jennings, Mark R.
core   +1 more source

Effect of Connective Tissue Graft as an Adjunct to Guided Bone Regeneration in the Surgical Treatment of Peri‐Implantitis: A Dual‐Center Randomized Controlled Trial

open access: yesClinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To evaluate whether adding a connective tissue graft (CTG) to guided bone regeneration (GBR) improves clinical and radiographic outcomes in surgical peri‐implantitis treatment. Materials and Methods Thirty‐two patients with peri‐implantitis were randomly assigned to receive GBR and CTG (test group, TG) or GBR alone (control group ...
Lucrezia Paterno Holtzman   +7 more
wiley   +1 more source

One‐Year Analysis of Clinical and Radiological Outcomes of Two‐Piece Zirconia Compared to Titanium Implants: A Multicenter Prospective Randomized Clinical Trial

open access: yesClinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To evaluate the clinical performance of two‐piece zirconia implants with screw‐retained abutments compared to titanium implants after 1 year of loading. Materials and Methods In this multicenter, prospective, randomized clinical trial, 61 two‐piece zirconia and 61 titanium implants were placed and restored with single crowns ...
Marc Balmer   +5 more
wiley   +1 more source

On the conflict between science and ethics: the case of the moggel, Labeo umbratus (Teleostei: Cyprinidae) from South Africa

open access: yesJournal of Fish Biology, EarlyView.
Abstract Recent molecular evidence showed that Labeo umbratus comprises two allopatrically distributed genetic lineages, a northern lineage confined to the Orange‐Vaal River system where this species was originally described and a southern lineage with three geographically separated haplogroups (western, central and eastern) distributed across multiple
Mpho Ramoejane   +3 more
wiley   +1 more source

Osteology and arthrology of the ankle and tarsometatarsus of anoles (Iguania: Anolidae): not convergent with geckos but divergent from the ancestral iguanian condition

open access: yesJournal of Anatomy, EarlyView.
Geckos and anoline iguanid lizards are well‐known for their possession of adhesive toepads, which are generally regarded as being convergent structures. We show that the anatomical configuration of the foot in these two lineages differs markedly and that these differences likely relate to the contrasing ways they deploy their adhesive systems and ...
Anthony P. Russell   +2 more
wiley   +1 more source

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