Massive Australian Precambrian/Cambrian Impact Structure Massive Australian Precambrian/Cambrian Impact Structure The Massive Australian Precambrian/Cambrian Impact Structure also known as MAPCIS is a proposed impact structure based upon arguments presented by Daniel P. Connelly at Geological Society of America meetings. Its center is located approximately equidistant between Uluru (Ayers Rock) and Mount Conner in Australia's Northern Territory. The structure is approximately in diameter. However, a hypothetical outermost ring in diameter is claimed to be the result of undefined far field stresses. Connelly argues that the age of this hypothetical impact is approximately 545 mya which puts it just before the Cambrian explosion (542 mya) of the
Interpersonal attraction of symmetric to asymmetric facial features depicting the highest attraction is still undetermined. It has also been suggested that people are attracted to faces similar to their own as these features serve as cues of kinship. This preference for facial-resemblance is thought to vary across contexts. For example, a study by DeBruine et al. (2008) found that individuals rated faces which had been manipulated to be similar to their own as having more prosocial attributes, but were less likely to find them sexually attractive. These results support "inclusive fitness theory", which predicts that organisms will help closely related kin over