Cyclostome is a biological term (from the Greek for "round mouth") used in a few different senses: for the taxon Cyclostomi, which comprises the extant...

with jaws (called gnathostomes) than to cyclostomes. Biologists historically disagreed on whether cyclostomes are a clade. The "vertebrate hypothesis"...

vertebrates and cyclostomes were monophyletic, and that "the intuitions of 19th century zoologists were correct in assuming that [cyclostomes] (notably, hagfishes)...

Traditionally, cyclostomes have been divided into two groups according to the skeletal organization. In free-walled (or double-walled) cyclostomes, the exterior...

to the gnathostomes than to the surviving agnathans, known as cyclostomes. Cyclostomes apparently split from other agnathans before the evolution of dentine...

between basal cyclostomes and modern hagfishes. Myxinikela is known from two specimens from the Mazon Creek fossil beds; such fossilized cyclostome specimens...

the intervertebral discs. In other taxa, such as chondrichthyans and cyclostomes, it constitutes a much greater proportion of the skeleton. It is not...

to the gnathostomes than to the surviving agnathans, known as cyclostomes. Cyclostomes apparently split from other agnathans before the evolution of dentine...

the evidence provided by Heimberg et al. and prepared to admit that cyclostomes are, in fact, monophyletic. The consequence is that they may tell us...

These fall into two major groups, informally called the cyclostomes and noncyclostomes. In cyclostome braconids, the labrum and the lower part of the clypeus...

unanimously in consensus of cyclostome monophyly, with more recent work being directed at shared microRNAs between cyclostomes and gnathostomes. The current...

hypothalamus. The optic chiasm is found in all vertebrates, although in cyclostomes (lampreys and hagfishes), it is located within the brain. This article...

The horizontal septum divides these two regions in vertebrates from cyclostomes (jawless lamprey and hagfish) to gnathostomes (jawed fish). In terrestrial...

Sugahara, F.; Pascual-Anaya, J.; et al. (2019). "Inner ear development in cyclostomes and evolution of the vertebrate semicircular canals". Nature. 565 (7739):...

"Comparative Ecology of Bryozoan Radiations: Origin of novelties in cyclostomes and Cheilostomes". PALAIOS. 12 (6): 505–523. Bibcode:1997Palai..12..505J...

fish became extinct during the Triassic period. However studies of the cyclostomes, the jawless hagfishes and lampreys that did survive, have yielded little...

stellatus on a cobble from the Kope Formation in northern Kentucky with the cyclostome bryozoan Corynotrypa in the background Middle Ordovician fossiliferous...

because it is paraphyletic (excluding jawed fishes and possibly the cyclostomes if anaspids are closer to them) and thus does not correspond to one evolutionary...

tail is symmetrical but not expanded (as in the first fishes and the cyclostomes, and a more primitive precursor in lancelets) (C) - Homocercal where...

(ANG II), which is a potent dipsogen in all vertebrate species except cyclostomes, hagfishes and lampreys. Adrenomedullin (AM) is another potent dipsogen...

require muscle contraction for proper joint cavitation. In contrast, cyclostomes have joints filled with tissue rather than fluid-filled cavities, with...

musculature and nerve cells. It is housed in the zooidal exoskeleton, which in cyclostomes is tubular and in cheilostomes is box-shaped. Polypides can undergo cycles...

The list of marine vertebrates of the Cape Peninsula and False Bay is a list of marine and shore-based vertebrate animal species that form a part of the...

Purnell, Mark A. (17 August 2016). "Pigmented anatomy in Carboniferous cyclostomes and the evolution of the vertebrate eye". Proceedings of the Royal Society...

and supragnathal plates. Romundina shares many characteristics of both cyclostomes and Gnathostomes to varying degrees. This reinforces the hypothesis that...

degenerated because of their environmental conditions. Dohrn claimed cyclostomes such as lampreys are degenerate fish as there is no evidence their jawless...

This is a list of fishes recorded from the oceans bordering South Africa. This part of the list includes any fishes that are not bony fishes., which are...

groups. More recently it has been proposed that conodonts may be stem-cyclostomes, more closely related to hagfish and lampreys than to jawed vertebrates...

Tustal. The Ichthyofauna of the river is represented by 37 species of cyclostomes and fish, the largest number of species occurs near the village Marinin...

J. (2012-06-15). "Evolutionary crossroads in developmental biology: cyclostomes (lamprey and hagfish)". Development. 139 (12): 2091–2099. doi:10.1242/dev...

silver lamprey is a member of the class Agnatha, sometimes referred to as cyclostomes (round-mouths). The silver lamprey should not be confused with the sea...

Cyrtopora is an extinct genus from a class of marine Bryozoans, the cyclostomes. It lived from 140 - 66 million years ago during the Cretaceous Period...

had a cartilaginous skeleton, and a branchial basket resembling the cyclostomes - features that suggest that it was a basal member of that clade. It...

pathways in the OC. This transformation can go in either direction. Snakes, cyclostomes and other animals that lack extremities have relatively many IVP. Notably...

wasps, usually under 5mm long. They are non-cyclostomes, but sometimes have the appearance of a cyclostome opening. Unlike Alysiinae, Opiinae have endodont...

incertae sedis. Some recent studies have suggested that anaspids are stem-cyclostomes, more closely related to hagfish and lampreys than to jawed fish. A newer...

ISBN 978-3-642-81585-0. Florkin, Marcel (2014-04-24). Deuterostomians, Cyclostomes, and Fishes. Elsevier. p. 575. ISBN 978-0-323-16334-7. "Kidney". Britannica...

Oisi, Yasuhiro; Kuratani, Shigeru (2019). "Inner ear development in cyclostomes and evolution of the vertebrate semicircular canals". Nature. 565 (7739):...

comprehensive redescription published in 2023 found that it was a stem-group cyclostome, more closely related to hagfish and lampreys than to jawed fish. Reeves...

London (T. Cadell in the Strand). Partiot, L. (1848). Mémoire sur les Cyclostomes, 71 + 1 pp. Jekelius, E. (1944). Sarmat und Pont von Soceni (Banat)....

the ancestral group of lamprey, it also has many features not found in Cyclostomes (lampreys and hagfishes). Clements et al. (2016) examined the eye anatomy...

The opisthonephros is the functional adult kidney in lampreys (cyclostomes), most fishes, and amphibians. It is formed from the extended mesonephros along...

PMC 3492459. PMID 23144898. Florkin, Marcel (2014). Deuterostomians, Cyclostomes, and Fishes. Elsevier. p. 83. ISBN 978-0-323-16334-7.  One or more of...

species is Spiritopora perplexa which is endemic to New Zealand. It is a cyclostome bryozoan, in the family Diaperoeciidae and order Cyclostomatida, described...

Kuratani, Shigeru (2022-04-01). "Thyroid and endostyle development in cyclostomes provides new insights into the evolutionary history of vertebrates"....

or in some unattached species, such as Selenaria, for locomotion). The cyclostome family Eleidae also convergently evolved an opercular structure during...

exoccipitals are not present among the earliest vertebrates or in modern cyclostomes or chondrichthyans, as those groups lack endochondral bone. Among osteichthyans...

making them ideal candidates for fossilization. They are distinct from cyclostomes because they lack calcified exterior walls above the basal lamina and...

Entobia borings and the cyclostome bryozoan Voigtopora thurni on an oyster valve from the Coon Creek Beds of the Ripley Formation (Upper Cretaceous) near...

Yasuhiro; Kuratani, Shigeru (January 2019). "Inner ear development in cyclostomes and evolution of the vertebrate semicircular canals". Nature. 565 (7739):...

Martha, S. O.; Taylor, P. D.; Rader, W. L. (2019). "Early Cretaceous cyclostome bryozoans from the early to middle Albian of the Glen Rose and Walnut...

reach a level of more than 20 families in the Maastrichtian, replacing cyclostomes as the dominant group of bryozoans. At the same time new forms evolved...

modified into a very long, hair-like structure is called a vibraculum. The cyclostome family Eleidae, which convergently evolved an opercular structure during...

Visual Arts (CAVA), a visual art school of India Cava, an extinct genus of cyclostome Bryozoa in the order Cyclostomatida Corydalis cava, a flowering plant...

duplication events that occurred after the separation of jawless fish (cyclostomes) from jawed vertebrates approximately 450 million years ago. This timeline...

row of stout spines running lengthwise along the foreleg tibia, and a cyclostome depression above the mandibles. Doryctinae have a worldwide distribution...

exterior wall possesses a prismatic structure, which is unique among the cyclostome bryozoans. Ernst, Andrej; Brett, Carlton E.; Wilson, Mark A. (2019). "Bryozoan...

S2CID 134706282. Paul D. Taylor; Soledad Brezina (2018). "A new Cenozoic cyclostome bryozoan genus from Argentina and New Zealand: strengthening the biogeographical...

ISBN 978-0-226-28497-2. Janvier, Philippe (2008). "Early Jawless Vertebrates and Cyclostome Origins". Zoological Science. 25 (10): 1045–1056. doi:10.2108/zsj.25.1045...

(1993). "Semi-multilamellar growth in Reptomulticava alhamensis, a new cyclostome (Bryozoa) species from the Tortonian of Alhama de Granada (S. Spain)"...

control. Rogadinae are small wasps, usually under 8mm long. They are cyclostomes and usually have a medial ridge on the abdomen. They are found worldwide...

Evidence of decreasing zooid size throughouth the evolutionary history of cyclostome bryozoans from the "Berenicea" lineage is presented by Ma, Liow & Taylor...

of evolutionary biology. Goodrich E.S. 1909. The Vertebrata Craniata (Cyclostomes and Fishes). Volume IX of Lankester E. Ray (ed) Treatise on Zoology,...

Buran-class spaceplane Ptichka. Buria (bryozoan), an extinct genus of cyclostome Bryozoan Buria rugosa, a junior synonym of the extinct mantis shrimp Sculda...

nigriceps have been used in biocontrol programs. Cardiochilines are non-cyclostome braconids with a similar appearance to Microgastrines. They possess the...

their life in the ocean but return to fresh water to spawn. They are Cyclostomes (Circle mouths), a primitive fish-like creature, and are not related...

S2CID 132070193. Mark A. Wilson; Paul D. Taylor (2016). "A new runner-like cyclostome bryozoan from the Bromide Formation (Sandbian, Upper Ordovician) of Oklahoma...

survive past the Paleozoic era Articulata (Cyclostomata), a group of cyclostome bryozoans, also known as Articulina Articulata (superphylum), a possible...

most vertebrates are small and contained within the braincase. In the cyclostomes, the sac is filled with poorly crystalline apatite (calcium phosphate)...

bryozoans, and "Berenicea" bryozoans. Entobia sponge borings and the cyclostome bryozoan Voigtopora thurni on an oyster valve from the Coon Creek Beds...

S. A.; Manukyan, A. R.; Zaldívar-Riverón, A. (2023). "A new enigmatic cyclostome parasitoid wasp (Hymenoptera, Braconidae, Rhyssalinae) with unusual ovipositor...

Yasuhiro; Kuratani, Shigeru (January 2019). "Inner ear development in cyclostomes and evolution of the vertebrate semicircular canals". Nature. 565 (7739):...

mmv.2009.66.15. Taylor, Paul D.; Gordon, Dennis P. (2003). "Endemic new cyclostome bryozoans from Spirits Bay, a New Zealand marine‐biodiversity "hotspot""...

Dolocan; Mark A. Purnell (2016). "Pigmented anatomy in Carboniferous cyclostomes and the evolution of the vertebrate eye". Proceedings of the Royal Society...

IIme partie. Physostomes (suite et fin), Anacanthiens, Chondrostéens, Cyclostomes.. Genève et Bâle. H. Georg, 1890 Faune des Vertébrés de la Suisse – Histoire...

EU Directive 2010/63/EU In addition to vertebrate animals including cyclostomes, cephalopods should also be included in the scope of this Directive,...

with the comparative anatomy and embryology of these vessels from the cyclostomes (petromyzontes) to man. Sterzi showed that, both in petromyzontes and...

Vetenskapsakademiens Handlingar. Series 3. 22 (1): 1–195. Stensiö, E. (1958). "Les cyclostomes fossiles ou ostracodermes. I". In P.-P. Grassé (ed.). Traité de Zoologie...

research focused on the comparative anatomy of mammals, the respiration of cyclostomes, and the reproductive cycle of amphibians. His interest in amphibians...

L. (1911). "Diagnoses de quelques espèces nouvelles de Bryozoaires Cyclostomes, provenant des Campagnes scientifiques accomplies par S.A.S. le Prince...

at the MN locus. In terms of the evolution of the genes themselves, cyclostomes which include lamprey and hagfish have only a single globin chain type...

the Occurrence of a Specific Submicroscopic Granulation in Hearts of Cyclostomes". Nature. 188 (4747): 324–325. doi:10.1038/188324a0. ISSN 1476-4687....

Sea-Fisheries Laboratorium p. 52, Pl. V, figs. 6—15. Collocheres elegans, a cyclostome copepod infesting Ophiocomina nigra in the Firth of Clyde. S Gorzula -...

lingual cartilage found in conodonts that resembles those found in extant cyclostomes (Hagfish and Lamprey) which are also predators.   Morphology of conodont...

S2CID 253867404. Taylor, P. D. (2022). "First taxonomic descriptions of operculate cyclostome bryozoans (Eleidae) from the Cretaceous of India and North America". Neues...

from the Kope Formation in northern Kentucky. In the background is the cyclostome bryozoan Two edrioasteroids, possibly Krama or Agelacrinites, with dissociated...

fish became extinct during the Triassic period. However studies of the cyclostomes, the jawless hagfishes and lampreys that did survive, have yielded little...

unicuspis. Northern brook lampreys are jawless fishes, also known as cyclostomes. The species is also considered a non-parasitic lamprey. They have poorly...

where it was found. Wilson, M.; Taylor, P. (2016). "A new runner-like cyclostome bryozoan from the Bromide Formation (Sandbian, Upper Ordovician) of Oklahoma...

Macrocentrinae. Amicrocentrinae are relatively large yellow or brown non-cyclostome braconids. This subfamily is found in Madagascar and continental Africa...

Many are dark in color, but they can be red, orange, or pale. They have cyclostome mouthparts and females usually have a long ovipositor. They are found...

John D. D. (2017-01-17). "Phylogenetically Widespread Polyembryony in Cyclostome Bryozoans and the Protracted Asynchronous Release of Clonal Brood-Mates"...

Amphioxus might be regarded as a paedomorphic ammocoete-like larva of a Cyclostome; it was never sent, because the day on which he was to have posted it...

serves to distinguish ichneumonids from braconids. Apozygines have a cyclostome oral cavity. The genus has only been found in Chile. It is suspected that...

Museum. Geology Series. 55 (1): 1–45. P. J. Hayward; J. S. Ryland (1984). Cyclostome Bryozoans: Keys and Notes for the Identification of the Species. p. 147...

Euphorinae. Euphorines are small, usually dark colored wasps. They are non-cyclostomes. Euphorines are found worldwide. Euphorines are solitary or rarely gregarious...

found within the Carmel Formation include seven species of calcareous cyclostome bryozoans as well as a soft-bodied ctenostome bryozoan. Cross-section...

Venkatesh, Byrappa (23 July 2021). "Reconstruction of proto-vertebrate, proto-cyclostome and proto-gnathostome genomes provides new insights into early vertebrate...

overgrew living and dead calcareous tubes. On the lower, left valve, cyclostome and cheilostome bryozoans predominated. Starfish seem equally able to...

Wilson; S. Bosch; P. D. Taylor (2015). "Middle Jurassic (Callovian) cyclostome bryozoans from the Tethyan tropics (Matmor Formation, southern Israel)"...

Macquitty) 1987 Volume 35: Millipedes (J Gordon Blower) 1985 Volume 34: Cyclostome Bryozoans (PJ Hayward and JS Ryland) 1985 Volume 33: Ctenostome Bryozoans...

mandibular arch (premandibular domain). As clearly seen in the lamprey, Cyclostome also has a pair of cartilaginous rods in the embryonic head which is similar...

Sp. nov Valid Zágoršek, Yazdi & Bahrami Miocene Qom Formation Iran A cyclostome bryozoan. Fabifenestella almazani Sp. nov Valid Ernst & Vachard Carboniferous...

braconid parasitoid wasps. Ichneutines are small to medium-sized, non-cyclostome braconids. They lack an occipital carina (ridge on the back of the head)...

"Description de quelques coquilles terrestres appartenant aux genres Cyclostome, Hélice, etc". Revue Zoologique par la Société Cuvierienne. 1842: 102...

cheilostome taxonomic richness surpassing the richness of once dominant cyclostomes, is published by Lidgard et al. (2021). Revision and a study on the biogeography...

(1978). "Multilaminar Growth in Reptomulticava texana, a New Species of Cyclostome Bryozoa". Journal of Paleontology. 52 (4): 830–845. JSTOR 1303903....

Afrocampsis, Canalicephalus, and Urosigalphus. Acampsohelconinae are non-cyclostome braconids with a carapace covering the metasoma. The outer hind tarsal...

this tribe are tiny and generally black or brown in color. They have non-cyclostome mouthparts and a carina, or ridge, along the back of the head. These wasps...

early vertebrates, inferred from caudal fin morphology of Paleozoic cyclostomes (Myxinidae and Petromyzontidae), jawless stem gnathostomes (Conodonta...

Other "Nemavermes" fossils from Mazon Creek are actually lamprey-like cyclostome fish, named as the new genus and species Squirmarius testai. The true...

D. Taylor; Gero Hillmer; Kei Matsuyama (2019). "Description of a new cyclostome species from the middle Santonian of Germany using micro-computed tomography"...

A, et al. (23 July 2021). "Reconstruction of proto-vertebrate, proto-cyclostome and proto-gnathostome genomes provides new insights into early vertebrate...

galeaspids than cyclostomes), but were not fused into a single unit around the brain (more closely resembling the cranial anatomy of cyclostomes than osteostracans...

26580. hdl:10261/359231. S2CID 258847830. Koromyslova, A. V. (2023). "New cyclostome bryozoans from the Lower Cretaceous of Dagestan". Neues Jahrbuch für Geologie...

F.E. (1847). "Description d'une nouvelle espèce de mollusque du genre Cyclostome, découverte par M. J. Itier pendant la mission de France en Chine". Revue...

"A brief history of misidentification and missing links: the Jurassic cyclostome Kololophos Gregory, 1896 and a new genus from the Cretaceous". Studi Trentini...

braconids, where the attachment is just above the hind coxa. They are non-cyclostome and females have long ovipositors. Their wings are often darkly colored...

braconids, often resembling species of Macrocentrinae. They have non-cyclostome mouth parts. Many are pale in coloration with large eyes and long tibial...