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Subphylum of chordates
The lancelets (/ˈlænslɪt, ˈlɑːn-/ LA(H)N-slit), also known as amphioxi (sing.: amphioxus /ˌæmfiˈɒksəs/ AM-fee-OK-səs), consist of 32 described species
Lancelet
1982 novel by Marion Zimmer Bradley
Lancelet visits Avalon, Morgaine falls in love with him, but her happiness is cut short when they discover Gwenhwyfar lost in the mist and Lancelet is
The_Mists_of_Avalon
Species of lancelet
Branchiostoma lanceolatum, the European lancelet or Mediterranean amphioxus is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate
Branchiostoma_lanceolatum
Flexible rod-shaped structure in all chordates
animals it can facilitate tail motion when swimming. In cephalochordates (lancelets), the notochord persists throughout life as the main structural support
Notochord
Species of lancelet
mud lancelet, is a lancelet of the genus Branchiostoma endemic to the Gulf of Mexico, where it is found in the northern part. Like other lancelets in the
Branchiostoma_bennetti
Species of lancelet
Branchiostoma japonicum, the Japanese lancelet, is a species of lancelet within the family Branchiostomatidae. The species grows to lengths of 50 to 60
Branchiostoma_japonicum
Phylum of animals having a dorsal nerve cord
retain the synapomorphies during their larval stage; and Cephalochordata (lancelets), which resemble jawless fish but have no gills or a distinct head. The
Chordate
Rhynchonellata Gymnolaemata Phylactolaemata Stenolaemata Sagittoidea Leptocardii (lancelet) Appendicularia (larvaceans) Ascidiacea (sea squirts, paraphyletic with
List_of_animal_classes
Species of lancelet
Branchiostoma floridae, the Florida lancelet, is a lancelet of the genus Branchiostoma. The genome of this species has been sequenced, revealing that
Branchiostoma_floridae
Brain and spinal cord
brain, though precursor structures exist in onychophorans, gastropods and lancelets. The rest of this article exclusively discusses the vertebrate central
Central_nervous_system
Species of lancelets
Asymmetron lucayanum is a species of lancelet that is native to the Atlantic and Indo-west pacific oceans. It is a benthic species lives in the tropical
Asymmetron_lucayanum
Extinct genus of primitive chordates
specimens have been recovered. The body structure resembles that of the lancelet and it swam perhaps much like an eel. A notochord and myomeres (segmented
Pikaia
Clade of animals comprising vertebrates and tunicates
respiratory and sensory functions, in contrast with cephalochordates such as the lancelet which lack a respiratory system and specialized sense organs. The long-standing
Olfactores
Species of lancelet
lancelet, is a species of lancelet that is native to reducing habitats of the Northwest Pacific Ocean of Japan. A. inferum is unique among lancelets for
Asymmetron_inferum
Gill-bearing non-tetrapod aquatic vertebrates
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Fish
Genus of lancelets
Branchiostoma is one of the few living genera of lancelets (order Amphioxiformes). It is the type genus of family Branchiostomatidae. These small vaguely
Branchiostoma
Animals that feed by straining food from water
clams, scallops and oysters), echinoderms (sea lilies) and chordates (lancelets, sea squirts and salps, as well as many marine vertebrates such as most
Filter_feeder
Species of lancelet
Branchiostoma belcheri, also known as the Belcher's lancelet, is a species of lancelet from the genus Branchiostoma. B. belcheri have a notochord, dorsal
Branchiostoma_belcheri
Protected and endangered lancelet species of China Order Family Scientific name Common name Chinese name Protection class in China IUCN Red List CITES
List of endangered and protected species of China
List_of_endangered_and_protected_species_of_China
Species of lancelet
Epigonichthys hectori is a species of lancelet in the family Branchiostomatidae. The species is the only known lancelet species found in New Zealand, rarely
Epigonichthys_hectori
Species of lancelet
Branchiostoma africae is a species of lancelets, a subphylum of chordates. Branchiostoma africae is a marine lancelet, living in coastal waters, buried in
Branchiostoma_africae
Protein that exhibits bright green fluorescence when exposed to ultraviolet light
other organisms including corals, sea anemones, zoanithids, copepods and lancelets. The GFP from A. victoria has a major excitation peak at a wavelength
Green_fluorescent_protein
Cellular process of loss of specialization
amputation, lancelet tails healed and formed a blastema structure, suggesting dedifferentiation of cells to prepare for regeneration. Lancelets can regenerate
Dedifferentiation
Extinct group of animals that lived between 485 and 538 million years ago
years ago. The first Cambrian chordate discovered is Pikaia gracilens, a lancelet-like animal from the Burgess Shale in British Columbia, Canada. The discoverer
Cambrian_chordates
Subphylum of chordates
Chordata Cephalochordata Leptocardii (lancelets) Olfactores Tunicata (sea squirts, etc) Vertebrata
Vertebrate
Topics referred to by the same term
LG Lancet, a Windows smartphone ZALA Lancet, a Russian military drone Lancelet, an animal Lancetfish, an animal Lance (disambiguation) This disambiguation
Lancet
Protein family
discovered in B. belcheri (Chinese lancelet) and Psectrotarsia flava (a moth). The terminal inverted repeats (TIR) in lancelet ProtoRAG have a heptamer-spacer-nonamer
Recombination-activating_gene
Cephalic part of an animal
maxillac. Though invertebrate chordates – such as the tunicate larvae or the lancelets – have heads, there has been a question of how the vertebrate head, characterized
Head
Superphylum of bilateral animals
Superphylum Deuterostomia Phylum Chordata Subphylum Cephalochordata (lancelets) Clade Olfactores Subphylum Tunicata (tunicates) Subphylum Vertebrata
Deuterostome
Signaling proteins released by host cells in response to the presence of pathogens
and lancelet, it was found that interferons arose by a duplication of interleukin 10 in a chordate ancestor to the vertebrates and the lancelets. By the
Interferon
Genus of lacelets
Asymmetron is one of the few living genera of lancelets (order Amphioxiformes). Asymmetron can grow to 60 mm. The species of this genus are found in world
Asymmetron
Organic vessel in which an embryo first begins to develop
are found in flatworms, roundworms, annelids, bivalves, echinoderms, the lancelet and in most marine arthropods. In anatomically simple animals, such as
Egg
Endocrine gland in the neck
closest living relatives of vertebrates, the tunicates and amphioxi (lancelets), have a structure very similar to that of larval lampreys (the endostyle)
Thyroid
Arthurian legend character
the story. In Marion Zimmer Bradley's novel The Mists of Avalon (1982), Lancelet is another name of Galahad, and an estranged son of the Lady of the Lake
Lancelot
Lancelet Branchiostoma lanceolatum
List_of_chordate_orders
Type of chromosome
Important comparisons were made using the genomic organization of the Florida lancelet – part of a sister group to all vertebrates – suggests that the ancestral
Microchromosome
Extinct genus of chordates
suggested that the genus is a cephalochordate and closely related to living lancelets, other authors have disputed this due to the poor preservation of the
Cathaymyrus
Extinct genus of chordates
description it was considered to be a cephalochordate (also known as a lancelet), though some other authors have considered its placement in the group
Palaeobranchiostoma
Organisms that live in salt water
the tunicates (salps and sea squirts) and the cephalochordates (such as lancelets). Invertebrate chordates are close relatives to vertebrates. In particular
Marine_life
describing various physiological structures in some crustaceans, insects and lancelets. "Hepatic" refers to the liver, and the hepatic caecum may perform some
Hepatic_caecum
Evolutionary trend
brain protected by a skull of bone or cartilage. Cephalochordates like the lancelet (Amphioxus), a small fishlike animal with very little cephalization, are
Cephalization
Basal animal clade as a sister group of the Porifera
Anthozoans inc. corals Medusozoans inc. jellyfish Myxozoans Chordates Lancelets Tunicates Vertebrates Echinoderms Sea lilies Asterozoans inc. starfish
Eumetazoa
Genus of lancelets
Epigonichthys is a genus of lancelets belonging to the family Branchiostomatidae. The genus was first described in 1876 by Wilhelm Peters. The type species
Epigonichthys
Extinct genus of jawless fishes
serially arranged gonads — which is considered a basal trait shared with the lancelets. Haikouichthys was likely an active swimmer which lived in bright, shallow
Haikouichthys
Three membranes protecting the brain
Giuseppe Sterzi described comparative studies on the meninges from the lancelet to the human. He showed that the spinal meninges were very simple in adult
Meninges
Marine animals without a vertebral column
including the non-vertebrate members of the phylum Chordata such as lancelets, sea squirts and salps. As the name suggests, marine invertebrates lack
Marine_invertebrates
Origin and diversification of fish through geologic time
(6): e219. doi:10.1371/journal.pbio.0030219. PMC 1149496. PMID 15941356. Lancelet (amphioxus) genome and the origin of vertebrates Archived 2016-03-04 at
Evolution_of_fish
Endocrine gland in the brain of most vertebrates
lamprey (another primitive vertebrate), however, does possess one. The lancelet Branchiostoma lanceolatum, an early chordate which is a close relative
Pineal_gland
Protein-coding gene in Homo sapiens
has been studied in amphioxi, also known as lancelets. A T-box-containing cDNA was isolated in the lancelet Branchiostoma belcheri and found to possess
TBR1
Cartilaginous fish in the order Chimaeriformes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Chimaera
Class of lobe-finned fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Coelacanth
Animal living mostly or entirely in water
sedentary filter feeders (e.g. bivalve molluscs, brachiopods, acorn worms, lancelets) and ambush predators (e.g. flatfishes and bobbit worms, who often burrow
Aquatic_animal
Subclass of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Elasmobranchii
Diverse clade of vertebrate animals
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Osteichthyes
length (excluding the tail).[citation needed] The largest lancelet is the European lancelet (Branchiostoma lanceolatum) "primitive fish". It can grow
Largest_and_heaviest_animals
Internal support structure of an animal
optimize contractile speed. In the more basal subphylum Cephalochordata (lancelets), the endoskeleton solely consists of a single notochord. Alternating
Endoskeleton
Extinct genus of soft-bodied sea animals
eyes, which is not the case in any other vertebrate, although is seen in lancelets. Even if the structure was a notochord, the presence of notochords is
Tullimonstrum
Clade of lobe-finned fish
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Sarcopterygii
Class of jawless fish
invertebrate subphyla Tunicata (sea-squirts) and the fish-like Cephalochordata (lancelets or Amphioxus). Recent molecular and morphological phylogenetic studies
Lamprey
Each side of the forebrain represents the opposite side of the body
after the larva has briefly settled with the mouth turned up, or the adult lancelet which buries obliquely with its mouth turned up, or many fish which tend
Contralateral_brain
Sheet of internal skeletal muscle
widely among the chordates. Thus the model organism, the marine chordate lancelet, possesses an atriopore by which water exits the pharynx, which has been
Thoracic_diaphragm
Study of the form or morphology of fishes
but not expanded (as in cyclostomatans, the ancestral vertebrates and lancelets). Diphycercal: vertebrae extend to the tip of the tail; the tail is symmetrical
Fish_anatomy
Species of fish
Dorosoma, is a reflection of the fact that, when young, the fish has a lancelet-shaped body (doro meaning lanceolate and soma meaning body). The specific
American_gizzard_shad
Anatomical structure in lancelets
In the lancelet, Hatschek's pit, not to be confused with Hatschek's nephridium, is a deep ciliated fossa on the dorsal midline of the buccal cavity (the
Hatschek's_pit
Animals without a vertebral column
(Echinodermata) Acorn worms, cephalodiscids and graptolites (Hemichordata) Lancelets (Amphioxiformes) Salps, pyrosomes, doliolids, larvaceans and sea squirts
Invertebrate
Type of elongated, flagellated cells
in the excretory systems of their host organism(s). For example, the lancelets, also referred to as amphioxus (genus Branchiostoma), utilize solenocytic
Solenocyte
Top of the head
(2019-07-01). "Evolution and development of the cartilaginous skull: From a lancelet towards a human face". Seminars in Cell & Developmental Biology. 91: 2–12
Crown_(anatomy)
Class of ray-finned bony fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Actinopterygii
Infraphylum of vertebrates
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Gnathostomata
Family of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Snailfish
Dutch biologist (1801–1868)
prof. Clark). He wrote as readily about crocodiles as about butterflies, lancelets and lemurs. His research on the nautilus resulted in the discovery of
Jan_van_der_Hoeven
Extinct paraphyletic class of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Placoderm
Enzyme involved in estrogen production
an early-diverging chordate, the cephalochordate amphioxus (the Florida lancelet, Branchiostoma floridae), but not in the earlier diverging tunicate Ciona
Aromatase
Division or infraclass of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Teleost
Blocks of skeletal muscle tissue in aquatic chordates
commonly zig-zaged, being stacks or lines of muscle fibers shaped like "V" (lancelets), "W" (fishes), or straight (tetrapods). Generally, cyclostome myomeres
Myomere
known as Lancelets. These organisms are in the kingdom Animalia, the phylum Chordata, the class Leptocardii, and the order Amphioxiformes. Lancelets are classified
Buccal_cirri
Paleopolyploidy in early vertebrates
in lancelets and tunicates, contradicting a prediction of Ohno's hypothesis that genome duplication occurred in the common ancestor of lancelets and
2R_hypothesis
Superclass of jawless fishes
used for filter feeding that is otherwise found only in tunicates and lancelets. During metamorphosis, the lamprey endostyle develops into the thyroid
Cyclostomi
Clade of vertebrates
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Rhipidistia
Excretory organ similar to vertebrate kidney
found in the phyla Platyhelminthes, Nemertea, Rotifera and Chordata (lancelets). They have the same anatomy as the metanephridia but with the internal
Nephridium
Human gene
Sea Lamprey Petromyzontiformes 563 XP_032831289.1 611 61.4 71.0 European Lancelet Amphioxiformes 581 XP_066281657.1 574 56.6 70.3 Crown-of-thorns Starfish
KLHL28
Species of flowering plant
to 15 cm (5.9 in) tall by 30 cm (12 in) wide. The toothed, obovate to lancelet shaped leaves are leathery with mealy-white edges. Umbels with up to 20
Primula_marginata
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
List of prehistoric cartilaginous fish genera
List_of_prehistoric_cartilaginous_fish_genera
Marine animals, subphylum of chordates
craniates (including hagfish, lampreys, and jawed vertebrates) than to lancelets, echinoderms, hemichordates, Xenoturbella or other invertebrates. The
Tunicate
Main body cavity in many animals
belong to three major clades: chordates (vertebrates, tunicates, and lancelets), echinoderms (starfish, sea urchins, sea cucumbers), and hemichordates
Coelom
Genus of gastropods
from parasitic trematodes, both attached to its skin and inside its body. Lancelet Péron & Lesueur C. A. (1810). "Histoire de la famille des Mollusques Ptéropodes
Phylliroe
2004 book on evolution by Richard Dawkins & Yan Wong
edition are based on OneZoom evolutionary mapping software. From the lancelets onward, the authors provide dates under duress stating that "dating becomes
The_Ancestor's_Tale
related invertebrates) 530 Mya Olfactores Excludes cephalochordates (Lancelets) Subphylum Vertebrata Fish / Vertebrates 505 Mya Infraphylum Gnathostomata
Timeline_of_human_evolution
Class of jawed cartilaginous fish
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Chondrichthyes
Amino acid derivative
N-methyl substituent and D-configuration — found across Chordates from lancelets to mammals. At homeostatic levels NMDA plays an essential role as a neurotransmitter
N-Methyl-D-aspartic_acid
Paraphyletic infraphylum of fish
represent a stage which precedes the evolution of the vertebral column (as do lancelets). The original scheme groups hagfish and lampreys together as cyclostomes
Agnatha
Protein-coding gene in the species Homo sapiens
Urchin Echinoida 627 XP_030853574.1 518 38% 56% Branchiostoma floridae Lancelet Lancelet 637 XP_035683876.1 460 45% 64% Aplysia californica Sea hare Aplysiidae
C6orf136
Extinct order of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Palaeoniscoid
Extinct class of jawless fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Cephalaspidomorphi
Bony skin-covered spines or rays protruding from the body of a fish
the first fishes and the cyclostomes, and a more primitive precursor in lancelets) (C) - Homocercal where the fin usually appears superficially symmetric
Fish_fin
Extinct family of jawless fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Pituriaspida
Subclass of fishes
evolution Forerunners Basal member †Pikaia Cephalochordate †Cathaymyrus Lancelet Olfactores †Haikouella Tunicate †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
Chondrostei
Regions of the pancreas
are absent in any invertebrate and primitive chordates (tunicates and lancelets). During the evolution of vertebrates, the cell types secreting peptides
Pancreatic_islets
Comparison of organism developmental processes
A. Lancelet (a chordate), B. Larval tunicate, C. Adult tunicate. Kowalevsky saw that the notochord (1) and gill slits (5) are shared by tunicates and vertebrates
Evolutionary developmental biology
Evolutionary_developmental_biology
1979 British nature documentary television series
shapes, sizes and methods of propulsion and navigation. The sea squirt, the lancelet and the lamprey are given as examples of the earliest, simplest types.
Life_on_Earth_(TV_series)
LANCELET
LANCELET
LANCELET
LANCELET
Girl/Female
Arabic, Indonesian
Respectful
Boy/Male
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Oriya, Sanskrit, Sindhi, Tamil, Telugu
Imperishable; A Name of Vishnu; Lord Krishna
Male
Greek
(ΠάÏις) Greek name probably derived from the word pari, PARIS means "wager." In mythology, this is the name of the son of Priam who kidnapped HelénÄ“ and later fatally wounded Achilles. Because it had been prophesied that he would cause the collapse of Troy, his father gave him to a shepherd to be destroyed. The shepherd could not bring himself to kill the baby so he left him in the desert. Five days later he found the infant still alive and decided to "take a chance," and raise the child himself. He named the baby Paris. Compare with another form of Paris.
Girl/Female
Indian, Sanskrit, Tamil
To Enlighten
Boy/Male
American, Danish, French, German, Greek, Indian, Italian, Spanish
Angel
Girl/Female
Arthurian Legend
Mother of Boore.
Girl/Female
Hindu, Indian, Marathi, Traditional
Goddes of the Woods
Girl/Female
Teutonic
Strong with a spear.
Surname or Lastname
Possibly an Americanized spelling of Czech and Slovak ÄŒech (see Cech), or other Slavic or German ethnic names for a Czech.English
Possibly an Americanized spelling of Czech and Slovak ÄŒech (see Cech), or other Slavic or German ethnic names for a Czech.English : unexplained.
Girl/Female
Australian, Irish
Rocky Hill
LANCELET
LANCELET
LANCELET
LANCELET
LANCELET
n.
A fishlike creature (Amphioxus lanceolatus), two or three inches long, found in temperature seas; -- also called the lancelet. Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebrae, nor red blood. It forms the type of the group Acrania, Leptocardia, etc.
n.
A small fishlike animal (Amphioxus lanceolatus), remarkable for the rudimentary condition of its organs. It is the type of the class Leptocardia. See Amphioxus, Leptocardia.
n.
The lancelet. See Amphioxus.