Results 161 to 170 of about 47,008 (268)

Scytophyllum waehneri (Stur) nov. comb., the correct name for Scytophyllum persicum (Schenk) Kilpper, 1975 [PDF]

open access: yes, 2011
Konijnenburg-van Cittert, Johanna H.A. van   +2 more
core   +1 more source

Middle Triassic ammonites from Sonora, México

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
Middle Triassic ammonites identified as cf. Paracrochordiceras sp. and Paranevadites cf. P. furlongi (Smith) are documented from a 180 m thick interval of sandstone, siltstone and limestone in the lower part of the Antimonio Formation in the Sierra del Álamo Muerto, in northwestern Sonora, Mexico… in order to continue, download the full paper in PDF.
John W. Estep   +2 more
openaire   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Early evolutionary history of the seed

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman   +2 more
wiley   +1 more source

Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae)

open access: yesJournal of Anatomy, Volume 248, Issue 6, Page 1026-1063, June 2026.
A three‐dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipanicicorum. The study finds that, potentially like the ancestral archosaur, this taxon was probably quadrupedal, plantigrade and neither strongly sprawling ...
Agustina Lecuona   +3 more
wiley   +1 more source

Barium Isotopes Indicate Spatiotemporal Heterogeneity of Marine Primary Productivity During the Toarcian Oceanic Anoxic Event

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Ma) was characterized by globally enhanced organic‐carbon burial and a negative carbon‐isotope excursion (N‐CIE). However, the role of marine productivity at this time, and its spatiotemporal variability, is unclear.
Wenhan Chen   +11 more
wiley   +1 more source

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