Evidence that the fossil insect trackway Bifurculapes laqueatus Hitchcock, 1858 was made underwater
نویسندگان
چکیده
Three trackways attributable to the ichnospecies Bifurculapes laqueatus Hitchcock, 1858 found in Lower Jurassic rocks of Newark Supergroup northeastern North America are preserved association with current lineations. Each trackway takes turns so that parts parallel current This parallelism is interpreted as evidence trackmakers were entrained flowing water and had change course due current. If this interpretation correct, then morphological differences between B. laqueatus terrestrial insect could be explained by trackmaker moving subaqueously. Further, B. laqueatus would constitute only second from region recognized being made subaqueously. From an ecological standpoint, aquatic insects made probably near the base local food chain, apex predators which piscivorous theropod dinosaurs.
منابع مشابه
Reanalysis and experimental evidence indicate that the earliest trace fossil of a winged insect was a surface-skimming neopteran.
A recent description and analysis of an imprint fossil from the Carboniferous concluded that it was made by a mayfly landing in sediment at the edge of water. Here, I reanalyze that trace fossil and supply experimental evidence regarding wing traces and behavior. The thorax of the trace maker lacked structures characteristic of mayflies, but closely matches a modern neopteran insect family (Tae...
متن کاملThe Fossil Trackway Pteraichnux Not Pterosaurian, but Crocodilian
The fossil trackway Pteraichnus saltwashensis Stokes 1957, from the Momson Formation of Arizona, originally attributed to a pterodactyloid pterosaur, is reassessed. We conclude that the assignment was incorrect because: 1 , Pteraichnus has five toes on the manus (all pterosaurs have four); and 2, pterosaurs did not walk quadrupedally. However, trackways similar in detail to the poorly preserved...
متن کاملThat was the week that was.
As the Royal College of Nursing Congress drew to a close in Harrogate members were in no doubt their national pay campaign had gathered momentum. It was no longer just about a 3 per cent pay rise for every nurse in the country, but about the future of the NHS itself.
متن کامل2012 -- That was the year that was.
Geriatric medicine has an encyclopaedic sweep, reflecting the complexity of both the ageing process and of our patient group. Keeping up with, and making sense of, the relevant scientific literature is challenging, especially as ageing has increased in prominence as a focus of research across many branches of the sciences and the humanities. This review of research published in 2012 in generali...
متن کاملInsect diversity in the fossil record.
Insects possess a surprisingly extensive fossil record. Compilation of the geochronologic ranges of insect families demonstrates that their diversity exceeds that of preserved vertebrate tetrapods through 91 percent of their evolutionary history. The great diversity of insects was achieved not by high origination rates but rather by low extinction rates comparable to the low rates of slowly e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Geologica Polonica
سال: 2023
ISSN: ['0001-5709', '2300-1887']
DOI: https://doi.org/10.24425/agp.2019.126456