28 Works

Data from: Postcranial anatomy of the extinct terrestrial sloth Simomylodon uccasamamensis (Xenarthra: Mylodontidae) from the Pliocene of the Bolivian Altiplano and its evolutionary implications

Alberto Boscaini, Néstor Toledo, Bernardino Mamani Quispe, Rubén Andrade Flores, Marcos Fernández-Monescillo, Laurent Marivaux, Pierre-Olivier Antoine, Philippe Münch, Timothy Gaudin & François Pujos
Extinct terrestrial sloths are common elements of the late Cenozoic South American fossil record. Among them, Mylodontinae species were particularly abundant in the Americas throughout the Pleistocene epoch, and their anatomy is relatively well known. In contrast, less information is available from the Neogene record and particularly from localities at low latitudes, with an additional and considerable bias in favor of craniodental rather than postcranial remains. In this contribution, we provide comparative descriptions of several...

Micro and macroclimatic constraints on the activity of a vulnerable tortoise: a mechanistic approach under a thermal niche view

Rafael A. Lara-Resendiz, Donald Miles, Philip Rosen & Barry Sinervo
1. Thermal constraints imposed by the environment limit the activity time of ectotherms and have been a central issue in ecophysiology. Assessing these restrictions is key to determining the vulnerability of species to changing thermal niches and developing conservation strategies. 2. We generate an explicit tortoise model of thermal constraints at both micro and macroclimate scales based on thermophysiology parameters and environmental operative temperatures during a biologically significant period. As a study model, we use...

Dataset for: Short flowers for long tongues: functional specialization in a nocturnal pollination network of an asclepiad in long-tongued hawkmoths (Biotropica)

Felipe W. Amorim, Salvador Marino, Priscila Andre Sanz-Veiga, Jeff Ollerton & Paulo E. Oliveira
Since Darwin, very long and narrow floral tubes have been known to represent the main floral morphological feature for specialized long-tongued hawkmoth pollination. However, specialization may be driven by other contrivances instead of floral tube morphology. Asclepiads are plants with a complex floral morphology where primary hawkmoth pollination had never been described. We detailed here the intricate pollination mechanism of the South American asclepiad Schubertia grandiflora, where functional specialization on long-tongued hawkmoth pollinators occurs despite...

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