Anthozoa - Wikipedia
Anthozoa is a class of marine invertebrates which includes sessile cnidarians such as the sea anemones, stony corals, soft corals and sea pens. Adult anthozoans are almost all attached to the seabed, while their larvae can disperse as planktons.
Class Anthozoa - Coral - Fossil
Corals are marine organisms of class Anthozoa (Kingdom Animalia, Phylum Cnidaria, Class Anthozoa) that typically live in large colonies of identical individuals. They are important reef builders in tropical seas, and are secretors of calcium …
Corals and sea anemones (anthozoa) - Smithsonian's National Zoo
The fossil record of Anthozoa extends back 550 million years. The oldest known Anthozoans, polyp-like fossils, come from the Vendian (late Precambrian) period. True corals appeared later, during the Cambrian period. Some species living today first appeared in the middle Triassic period — around the same time as early dinosaurs!
Phylum Cnidaria – UMORF - University of Michigan
Anthozoa is a cnidarian class that includes corals, sea anemones, sea fans, and sea pens. Most recognizable are the corals, which have been major reef building animals throughout Earth’s history (UCMP). Anthozoa dates back to the Precambrian (~580 million years ago) and …
Phylogenomics, Origin, and Diversification of Anthozoans (Phylum ...
2021年1月28日 · With a fully resolved, time-calibrated phylogeny for 234 species constructed from hundreds of ultraconserved elements and exon loci, we explore the evolutionary origins of the major clades of Anthozoa and some of their salient morphological features.
Virtual Collection: Rugose Corals (Rugosa) - Digital Atlas of …
Fossil specimen of the colonial rugose coral Acrocyathus floriformis from the Mississipian St. Louis Limestone of Monroe County, Illinois (PRI 70756). Specimen is from the collections of the Paleontological Research Institution , Ithaca, New York.
Anthozoa - New World Encyclopedia
Anthozoa is a class of marine invertebrates within the phylum Cnidaria that are unique among cnidarians in that they do not do not have a medusa stage in their development. These exclusively polypoid cnidarians are characterized by a tubular body with tentacles around the mouth and most are sedentary after the larval stage.
Anthozoa - Mindat.org
Anthozoa is a class of marine invertebrates which includes the sea anemones, stony corals and soft corals. Adult anthozoans are almost all attached to the seabed, while their larvae can disperse as part of the plankton.
Variation within Anthozoa - Oregon State University
Anthozoans occur from the intertidal zone to the depths of the trenches (to 6000 m). In excess of 6000 species currently exist (Hyman 1940), comprising about two-thirds of extant cnidarian species (Dunn 1982); some anthozoans, such as the scleractinian corals, have a rich fossil history (Wells and Hill 1956).
Anthozoa - an overview | ScienceDirect Topics
The fossil record of non-skeletonised cnidarians, the Scyphozoa and most Hydrozoa, is poor and patchy. However, the Anthozoa includes the corals, which possess a carbonate skeleton and have an excellent fossil record from the Cambrian onwards to the Present Day.