Jurassic Osmundaceous Landscapes in Patagonia: Exploring the Concept of Ecological Stasis in the Deseado Massif, Argentina.

Herein, we report the presence of a plant paleocommunity, dominated by ferns of the family Osmundaceae, structurally preserved from the only known Mesozoic, fossiliferous geothermal deposits, from the La Matilde Formation (Middle-Upper Jurassic) in the Deseado Massif of Southern Patagonia, Argentina. A total of 13 siliceous chert blocks sampled in an area of approximately 250 m, preserving a monotypic assemblage dominated by Osmundaceae embedded within its original swampy substrate, are documented. Additional Osmundaceae and fewer ferns and conifers are present in the stratigraphically continuous, adjacent chert levels.

Intra- and inter-rater reliability, standard error of measurement, and minimal detectable change of the cranio-cervical flexion test in individuals with non-specific chronic neck pain.

Background: The cranio-cervical flexion test (CCFT) is used in clinical practice to measure the activation of deep cervical flexor muscles. However, the reliability of the test has not been conducted on an adequate sample size, specifically in individuals with non-specific chronic neck pain (CNP).

Objective: The aim of the present study is to investigate the intra- and inter-rater reliability, standard error of measurement (SEM), and minimal detectable change (MDC) of the CCFT in individuals with non-specific CNP.

Non-linear interactions of lower limb clinical measures associated with asymptomatic Achilles tendon pathology in ballet dancers.

Context: Tendon abnormalities on imaging are commonly observed in individuals with Achilles tendinopathy. Those abnormalities can also be present in asymptomatic individuals, which is an important risk factor for developing tendon symptoms. Ballet dancers are particularly vulnerable due to the high loads placed on their Achilles tendons.

Yerba mate () genome provides new insights into convergent evolution of caffeine biosynthesis.

Yerba mate (YM, ) is an economically important crop marketed for the elaboration of mate, the third-most widely consumed caffeine-containing infusion worldwide. Here, we report the first genome assembly of this species, which has a total length of 1.06 Gb and contains 53,390 protein-coding genes.