Accumulated records of organic microfossils span billions of years of Earth history. The
majority of this record consists of prokaryotes plus eukaryotes of a protistan grade, yet this …

Re-evaluation of eumetazoan modular coloniality gives a new perspective to Ediacaran–
Ordovician animal diversification. Highly integrated eumetazoan colonies (porpitids …

Few fossils demonstrate the presence of the Hemichordata (Enteropneusta, Pterobranchia–
excluding benthic and planktic Graptolithina) in the early Palaeozoic. Many of these early …

The early evolution of the Hemichordata (Enteropneusta and Pterobranchia) based on the
available fossil record has its challenges and highlights. Even though the pterobranchs …

Benthic graptolites (Graptolithina) were surprisingly common and diverse in the Miaolingian
(Cambrian), but have rarely been described in detail. Encrusting and erect growing colonies …

Pterobranchs originated in the basal Cambrian (Fortunian) and are mostly known by their
tubes preserved in the fossil record. The earliest forms are represented by bushy erect …

目的为发现下寒武统筇竹寺组可与澄江生物群对比的化石产地, 区域地层对比和进一步揭示早寒
武世生物的生命演化提供重要的古生物化石依据. 方法以下寒武统筇竹寺组石岩头段下黑层深 …

Enteropneusts (acorn worms) are hemichordates, the sister group to echinoderms. Together
they form the clade Ambulacraria, which is closely related to chordates. All three groups …

Acrotretides are extinct micromorphic brachiopods that exhibited considerable
morphological variation during their rapid evolution in the early Palaeozoic. The plano …

The occurrence of a likely graptolite in lowest Wuliuan strata of the Franconian Forest almost
certainly records the oldest known graptolithoid hemichordate in West Gondwana and …