Definition of Archaeocyathids. Meaning of Archaeocyathids. Synonyms of Archaeocyathids

- disappearance coincided with a rapid diversification of the Demosponges. The archaeocyathids were important reef-builders in the early to middle Cambrian, with...
- the Early Cambrian (542–513 Ma) resulted from calcareous algae and archaeocyathids (small animals with conical shape, probably related to sponges) and...
- been found in rocks dated from 580 million years ago. In addition Archaeocyathids, whose fossils are common in rocks from 530 to 490 million years ago...
- in filter-feeding organisms. The trilobite, inarticulate brachiopod, archaeocyathid, and eocrinoid faunas of the Cambrian were succeeded by those that dominated...
- structure built by animals), exemplified by a small bioherm constructed by archaeocyathids and calcified microbes at the start of the Tommotian stage about 530...
- Calcareous conical s**** 5 species, extinct Archaeocyatha Ancient cups Archaeocyathids An extinct taxon of sponge-grade, reef-building organisms living in...
- building sponges known as Archaeocyatha, returned once more as the archaeocyathids became extinct. This declining trend did not change until the Great...
- Blockkonglomerat), a Lower Carboniferous wildflysch. However, the aforementioned archaeocyathids are not three-dimensional fossils, but two-dimensional thin sections...
- reef formation are characteristic of different geologic time periods: Archaeocyathids appeared in the early Cambrian; these gave way to sponges by the late...
- boundary definition candidates First appearance of small s****y fauna or Archaeocyathids Lower boundary GSSP candidate section(s) None Upper boundary definition...