The Cambrian diversification of animals was long thought to have begun with an explosive
phase at the start of the Tommotian Age. Recent stratigraphic discoveries, however, suggest …

Molluscs are extremely diverse invertebrate animals with a rich fossil record, highly
divergent life cycles, and considerable economical and ecological importance. Key …

Molluscs comprise the second largest phylum of animals (after arthropods), occurring in
virtually all habitats. Some are commercially important, a few are pests and some carry …

Molluscs (snails, octopuses, clams and their relatives) have a great disparity of body plans
and, among the animals, only arthropods surpass them in species number. This diversity …

Deuterostomes are the major division of animal life which includes sea stars, acorn worms,
and humans, among a wide variety of ecologically and morphologically disparate taxa …

Abstract The Cambrian Explosion by nature is a three-phased explosion of animal body
plans alongside episodic biomineralization, pulsed change of generic diversity, body size …

The diversification of animals during the Cambrian Period is one of the most significant
evolutionary events in Earth's history. However, the sequence of events leading to the origin …

Monoplacophorans are among the rarest members of the phylum Mollusca. Previously only
known from fossils since the Cambrian, the first living monoplacophoran was discovered …

Assemblages of mineralized skeletal fossils are described from limestone rocks of the lower
Cambrian Nemakit-Daldyn, Medvezhya, Kugda-Yuryakh, Manykay, and lower Emyaksin …

The Cambrian 'explosion'is widely regarded as one of the fulcrum points in the history of life,
yet its origins and causes remain deeply controversial. New data from the fossil record …