Cryptic bioentities with their significance from the Gotan Formationof Bilara Group, Marwar Supergroup, Rajasthan

摘要

The Neoproterozoic (1000–542 Ma) period is recognized as the most significant in the earth’s history basing on the available information from the different studies, including physical and biological factors. The plate motion is coherent with complexgeodynamics, responsible for the opening up of new oceans and closing others (ecospace) due to break-up and amalgation/subsidence of the crustal blocks in the Gondwana Supercontinent1,2. There are negligible chances of preservation of molecular and cellbiological characters, except structural bioentities in that condition3. The explosion and diversification of the acritarchs including morpho-complex fossils (planktic and benthic) are celluloid/ biomineralized forms, burried/preserved in the sedimentsand on the bedding planes of rocks. In Precambrian micropalaeontology, the acritarchs and algae are considered as important and second most significant key tool after molecular remnants. Hence they are used by various workers (see cited references therein)4 for biostratigraphy and age implications for complex geological successions in the absence of dating minerals as well as palaeoenvironment. The evolution of the new progeny in algae is the result of the interplay of many diverse genes subjected to little morphological changes without disturbing the genotype by spatial gene. These genes act as autotransformations with regular intervals in algae rather than environmental condition.