Erratus, the Glossary
Erratus is an extinct genus of marine arthropod from the Cambrian of China.[1]
Table of Contents
68 relations: Anatomical terms of location, Anomalocarididae, Anomalocaris, Aquatic feeding mechanisms, Arthropod, Arthropod leg, Basal (phylogenetics), Benthic zone, Brachiopod, Burgess Shale, Cambrian, Canadaspis, Carapace, China, Crown group, Deuteropoda, Exoskeleton, Extinction, Eye, Eyestalk, Fauna, Filter feeder, Flipper (anatomy), Fortiforceps, Fuxianhuiida, Genus, Gill, Holotype, Hurdia, Hurdiidae, Hymenocarina, Isoxyida, Isoxys, Kerygmachela, Kylinxia, Lagerstätte, Latin, Leanchoilia, Leg, Lens (vertebrate anatomy), Maotianshan Shales, Megacheira, Megadictyon, Myllokunmingia, Nekton, Nereocaris, Ocean, Odaraia, Olenoides, Opabinia, ... Expand index (18 more) »
Anatomical terms of location
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans.
See Erratus and Anatomical terms of location
Anomalocarididae
Anomalocarididae (occasionally mis-spelt Anomalocaridae) is an extinct family of Cambrian radiodonts, a group of stem-group arthropods.
See Erratus and Anomalocarididae
Anomalocaris
Anomalocaris ("unlike other shrimp", or "abnormal shrimp") is an extinct genus of radiodont, an order of early-diverging stem-group arthropods. Erratus and Anomalocaris are Cambrian arthropods and Maotianshan shales fossils.
Aquatic feeding mechanisms
Aquatic feeding mechanisms face a special difficulty as compared to feeding on land, because the density of water is about the same as that of the prey, so the prey tends to be pushed away when the mouth is closed.
See Erratus and Aquatic feeding mechanisms
Arthropod
Arthropods are invertebrates in the phylum Arthropoda.
Arthropod leg
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking.
Basal (phylogenetics)
In phylogenetics, basal is the direction of the base (or root) of a rooted phylogenetic tree or cladogram.
See Erratus and Basal (phylogenetics)
Benthic zone
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers.
Brachiopod
Brachiopods, phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs.
Burgess Shale
The Burgess Shale is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada.
Cambrian
The Cambrian is the first geological period of the Paleozoic Era, and the Phanerozoic Eon.
Canadaspis
Canadaspis ("Shield of Canada") is an extinct genus of bivalved Cambrian arthropod, known from North America and China. Erratus and Canadaspis are Cambrian arthropods, Maotianshan shales fossils and Prehistoric arthropod genera.
Carapace
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises.
China
China, officially the People's Republic of China (PRC), is a country in East Asia.
Crown group
In phylogenetics, the crown group or crown assemblage is a collection of species composed of the living representatives of the collection, the most recent common ancestor of the collection, and all descendants of the most recent common ancestor.
Deuteropoda
Deuteropoda is a proposed clade of arthropods whose members are distinguished from more basal stem-group arthropods like radiodonts by an anatomical reorganization of the head region, namely the appearance of a differentiated first appendage pair (the 'deutocerebral' pair), a multisegmented head, a hypostome/labrum complex, and by bearing pairs of segmented biramous limbs.
Exoskeleton
An exoskeleton (from Greek έξω éxō "outer" and σκελετός skeletós "skeleton") is a skeleton that is on the exterior of an animal in the form of hardened integument, which both supports the body's shape and protects the internal organs, in contrast to an internal endoskeleton (e.g.
Extinction
Extinction is the termination of a taxon by the death of its last member.
Eye
An eye is a sensory organ that allows an organism to perceive visual information.
See Erratus and Eye
Eyestalk
In anatomy, an eyestalk (sometimes spelled eye stalk and also known as an ommatophore) is a protrusion that extends an eye away from the body, giving the eye a better field of view.
Fauna
Fauna (faunae or faunas) is all of the animal life present in a particular region or time.
Filter feeder
Filter feeders are aquatic animals that acquire nutrients by feeding on organic matters, food particles or smaller organisms (bacteria, microalgae and zooplanktons) suspended in water, typically by having the water pass over or through a specialized filtering organ.
Flipper (anatomy)
A flipper is a broad, flattened limb adapted for aquatic locomotion.
See Erratus and Flipper (anatomy)
Fortiforceps
Fortiforceps is an extinct genus of Cambrian megacheiran arthropod known from the Chengjiang biota of Yunnan, China. Erratus and Fortiforceps are Cambrian arthropods, Maotianshan shales fossils and Prehistoric arthropod genera.
Fuxianhuiida
Fuxianhuiida is an extinct clade of arthropods from the Cambrian of China.
Genus
Genus (genera) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses.
Gill
A gill is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide.
See Erratus and Gill
Holotype
A holotype is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described.
Hurdia
Hurdia is an extinct genus of hurdiid radiodont that lived 505 million years ago during the Cambrian Period. Erratus and hurdia are Cambrian arthropods.
Hurdiidae
Hurdiidae (synonymous with the previously named Peytoiidae) is an extinct cosmopolitan family of radiodonts, a group of stem-group arthropods, which lived during the Paleozoic Era.
Hymenocarina
Hymenocarina is an order of extinct arthropods known from the Cambrian. Erratus and Hymenocarina are Cambrian arthropods.
Isoxyida
Isoxyids are members of the order Isoxyida and the family Isoxyidae, a group of basal arthropods that existed during the Cambrian period.
Isoxys
Isoxys (meaning "equal surfaces") is a genus of extinct bivalved Cambrian arthropod; the various species of which are thought to have been freely swimming predators. Erratus and Isoxys are Cambrian arthropods and Maotianshan shales fossils.
Kerygmachela
Kerygmachela kierkegaardi is a kerygmachelid gilled lobopodian from the Cambrian Stage 3 aged Sirius Passet Lagerstätte in northern Greenland. Erratus and kerygmachela are Cambrian arthropods and Prehistoric arthropod genera.
Kylinxia
Kylinxia is a genus of extinct arthropod described in 2020. Erratus and Kylinxia are Cambrian arthropods, Maotianshan shales fossils and Prehistoric arthropod genera.
Lagerstätte
A Fossil-Lagerstätte (from Lager 'storage, lair' Stätte 'place'; plural Lagerstätten) is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues.
Latin
Latin (lingua Latina,, or Latinum) is a classical language belonging to the Italic branch of the Indo-European languages.
Leanchoilia
Leanchoilia is a megacheiran arthropod known from Cambrian deposits of the Burgess Shale in Canada and the Chengjiang biota of China. Erratus and Leanchoilia are Maotianshan shales fossils and Prehistoric arthropod genera.
Leg
A leg is a weight-bearing and locomotive anatomical structure, usually having a columnar shape.
See Erratus and Leg
Lens (vertebrate anatomy)
The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes.
See Erratus and Lens (vertebrate anatomy)
Maotianshan Shales
The Maotianshan Shales are a series of Early Cambrian sedimentary deposits in the Chiungchussu Formation, famous for their Konservat Lagerstätten, deposits known for the exceptional preservation of fossilized organisms or traces. Erratus and Maotianshan Shales are Maotianshan shales fossils.
See Erratus and Maotianshan Shales
Megacheira
Megacheira ("great hands", also historically great appendage arthropods) is an extinct class of predatory arthropods defined by their possession of spined "great appendages".
Megadictyon
Megadictyon is a genus of Cambrian lobopodian with similarities to Jianshanopodia and Siberion.
Myllokunmingia
Myllokunmingia is a genus of basal chordate from the Lower Cambrian Maotianshan shales of China 518 mya and is thought to be a vertebrate, although this is not conclusively proven. Erratus and Myllokunmingia are Maotianshan shales fossils.
See Erratus and Myllokunmingia
Nekton
Nekton or necton (from the) refers to aquatic organisms that can actively and persistently propel themselves (i.e. swim) through a water column.
Nereocaris
Nereocaris is an extinct genus of bivalved hymenocarine arthropod that lived in the Cambrian aged Burgess Shale in what is now British Columbia around 506 million years ago. Erratus and Nereocaris are Cambrian arthropods.
Ocean
The ocean is the body of salt water that covers approx.
Odaraia
Odaraia is a genus of bivalved arthropod from the Middle Cambrian. Erratus and Odaraia are Maotianshan shales fossils.
Olenoides
Olenoides was a trilobite from the Cambrian period.
Opabinia
Opabinia regalis is an extinct, stem group arthropod found in the Middle Cambrian Burgess Shale Lagerstätte (505 million years ago) of British Columbia. Erratus and Opabinia are Cambrian arthropods.
Paleozoic
The Paleozoic (or Palaeozoic) Era is the first of three geological eras of the Phanerozoic Eon.
Pambdelurion
Pambdelurion is an extinct genus of panarthropod from the Cambrian aged Sirius Passet site in northern Greenland. Erratus and Pambdelurion are Cambrian arthropods and Prehistoric arthropod genera.
Paratype
In zoology and botany, a paratype is a specimen of an organism that helps define what the scientific name of a species and other taxon actually represents, but it is not the holotype (and in botany is also neither an isotype nor a syntype).
Perspicaris
Perspicaris (from the Latin perspicax, meaning “sharp-sighted,” and caris, “crab/shrimp”) an extinct genus of bivalved arthropod from the Cambrian period. Erratus and Perspicaris are Prehistoric arthropod genera.
Phoronid
Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies.
Phylogenetics
In biology, phylogenetics is the study of the evolutionary history and relationships among or within groups of organisms.
Radiodonta
Radiodonta is an extinct order of stem-group arthropods that was successful worldwide during the Cambrian period.
Scleroctenophora
Scleroctenophora is an extinct class of stem group ctenophores, known from the Chinese Maotianshan shales of Yunnan. Erratus and Scleroctenophora are Maotianshan shales fossils.
See Erratus and Scleroctenophora
Surusicaris
Surusicaris is an extinct genus of bivalved arthropod, known from the Cambrian Burgess Shale of British Columbia, Canada. Erratus and Surusicaris are Cambrian arthropods.
Telson
The telson is the hindmost division of the body of an arthropod.
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, chickens, ants, spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g. fish, lobsters, octopuses), and semiaquatic animals, which rely on both aquatic and terrestrial habitats (e.g.
See Erratus and Terrestrial animal
Trachea
The trachea (tracheae or tracheas), also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all animals with lungs.
Trilobite
Trilobites (meaning "three lobes") are extinct marine arthropods that form the class Trilobita.
Turbidity current
A turbidity current is most typically an underwater current of usually rapidly moving, sediment-laden water moving down a slope; although current research (2018) indicates that water-saturated sediment may be the primary actor in the process.
See Erratus and Turbidity current
Wing
A wing is a type of fin that produces lift while moving through air or some other fluid.
See Erratus and Wing
Worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and usually no eyes.
See Erratus and Worm
Yohoia
Yohoia is an extinct genus of megacheiran arthropod from the Cambrian period that has been found as fossils in the Burgess Shale formation of British Columbia, Canada. Erratus and Yohoia are Cambrian arthropods and Prehistoric arthropod genera.
Yunnan
Yunnan is an inland province in Southwestern China.
References
[1] https://en.wikipedia.org/wiki/Erratus
, Paleozoic, Pambdelurion, Paratype, Perspicaris, Phoronid, Phylogenetics, Radiodonta, Scleroctenophora, Surusicaris, Telson, Terrestrial animal, Trachea, Trilobite, Turbidity current, Wing, Worm, Yohoia, Yunnan.