Results 51 to 60 of about 1,753 (201)

Monotreme ossification sequences and the riddle of mammalian skeletal development

, 2011
The developmental differences between marsupials, placentals, and monotremes are thought to be reflected in differing patterns of postcranial development and diversity.
Weisbecker, Vera, Vera Weisbecker
core   +1 more source

Evolution and survival on eutherian sex chromosomes. [PDF]

PLoS Genetics, 2009
Since the two eutherian sex chromosomes diverged from an ancestral autosomal pair, the X has remained relatively gene-rich, while the Y has lost most of its genes through the accumulation of deleterious mutations in nonrecombining regions.
Melissa A Wilson, Kateryna D Makova
doaj   +1 more source

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

Modeling Dragons: Using linked mechanistic physiological and microclimate models to explore environmental, physiological, and morphological constraints on the early evolution of dinosaurs.

PLoS ONE, 2020
We employed the widely-tested biophysiological modeling software, Niche Mapper™ to investigate the metabolic function of the Late Triassic dinosaurs Plateosaurus and Coelophysis during global greenhouse conditions.
David M Lovelace, Scott A Hartman, Paul D Mathewson, Benjamin J Linzmeier, Warren P Porter   +4 more
doaj   +1 more source

EchidnaCSI – Improving monitoring of a cryptic species at continental scale using Citizen Science

Global Ecology and Conservation, 2021
Short-beaked echidna (Tachyglossus aculeatus) are a cryptic and iconic monotreme found throughout the continent of Australia. Despite observational records spanning many years aggregated in national and state biodiversity databases, the spatial and ...
Alan Stenhouse, Tahlia Perry, Frank Grützner, Megan Lewis, Lian Pin Koh   +4 more
doaj   +1 more source

Interpreting a Legacy Fossil Assemblage Excavated From Waribruk (New Guinea II Cave), GunaiKurnai Aboriginal Country, Snowy River National Park, Southeastern Australia

Archaeology in Oceania, EarlyView.
ABSTRACT In this paper we report on faunal remains recovered from a legacy archaeological excavation undertaken in the rockshelter entrance of Waribruk (New Guinea II Cave), a GunaiKurnai site located on the west bank of the Snowy River, East Gippsland, southeastern Australia.
Matthew C. McDowell, Bruno David, Jean‐Jacques Delannoy, Russell Mullett, Fiona Petchey, Helen Green, Joanna Fresløv, GunaiKurnai Land and Waters Aboriginal Corporation   +7 more
wiley   +1 more source

Placental crises: disruptive selection and maternal under‐investment as the foundations of mammalian placental evolution and dysfunction

Biological Reviews, EarlyView.
ABSTRACT Among the vertebrates, mammals are notable for the dominance of live birth and placental nutrition. The structural diversity of the mammalian placenta is remarkable, despite sharing a single common ancestor and conserved physiological functions.
Davis Laundon, Neil J. Gostling, Ian G. Reddin, Bram G. Sengers, Pascale Chavatte‐Palmer, Rohan M. Lewis   +5 more
wiley   +1 more source

New observations of the western long-beaked echidna on the Vogelkop Peninsula, Indonesian New Guinea

Oryx
As part of a project investigating the distribution of the Critically Endangered western long-beaked echidna Zaglossus bruijnii in western New Guinea, we report two new records of this rarely-recorded species in forests around Klalik Village in Sorong ...
Agustina Yohana Setyarini Arobaya, Onesimus Paa, Ari Lagu, Marthen Jitmau, Diana O. Fisher, Nur Alzair, Fajar F.D. Darwis, Mohamad R. Riadhi, Freddy Pattiselanno   +8 more
doaj   +1 more source

Humans are not unique: difficult birth is common in placental mammals

Biological Reviews, EarlyView.
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley   +1 more source

Data from: Monotreme ossification sequences and the riddle of mammalian skeletal development

, 2011
The developmental differences between marsupials, placentals and monotremes are thought to be reflected in differing patterns of postcranial development and diversity.
Weisbecker, Vera
core   +1 more source