While some animal groups possess a sack-like gut, others possess a tube shaped alimentary canal with an opening for food uptake, the mouth, and an opening for defecation, the anus. The evolutionary origin of the hindgut with the anal opening remains unclear. Bilaterally symmetric animals (Bil...
, bounced over the notch for storing the stone before use, and toppled onto the hillside with a loud crash – crushing the worthless Roman seal strapped over it. The soldiers cringed as one at the ear-splitting “detonation” of the door-of-rock collapsing onto more rock, and their writ...
The First Three Minutes: A Modern View of the Origin of the Universe. London: Flamingo. Google Scholar White, Hayden. (1980). ‘The Value of Narrativity in the Representation of Reality’. Critical Inquiry 7, no. 1: 5–27. Article Google Scholar Whitfield, Stephen. J. (1996). The ...
As an alternative, the lobate structures suggest infilling of a 3D, sacklike organism (?) flattened by compaction, with "wrapping" of the corrugation onto the upper as well as basal surface. Whatever the origin, the unique combination of features reported here has never before been found in ...