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LEMNISCATE [8 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-09-06

English

Subject field(s)
  • Mathematics
DEF

The plane locus that is the foot of the perpendicular from the origin to a variable tangent to a rectangular hyperbola.

OBS

Special use of Latin "lemniscus": pendent ribbon.

French

Domaine(s)
  • Mathématiques
DEF

Courbe, lieu géométrique des points tels que le produit de leurs distances à deux points fixes est constant.

OBS

Du latin "lemniscatus", de "lemniscus" (ruban), d'origine grecque, à cause de la forme en 8 d'une des lemniscates.

Spanish

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Record 2 1977-06-29

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Heterorthidae [are] transversely subcircular to subquadrate with [the] hinge line less than [the] maximum shell width, concavo-convex to bioconvex, [the] ventral interarea [is] apsacline, [the] dorsal interarea [is] anacline, [the] delthyrium [is] open, [the] notothyrium [is] open or with [a] chilidium, [they are] typically finely costellate, rarely with [a] ventral fold and dorsal sulcus; [the] ventral muscle field [is] large with long divergent, semi-circular, commonly flabellate and scalloped, diductor scars with anterior ends widely separated, extending far beyond and not enclosing [the] adductor scars; [the] cardinal process is narrow of semioval with [a] commonly trilobate posteroventral surface, [the] brachiophores [are] ridge like, fused to [the] valve floor throughout their length, [the] dorsal adductor field [is] quadripartite, subcircular; [the] dorsal mantle canal system [is] lemniscale, [the] ventral [is] probably also lemniscate. "M. Ord.-U. Ord. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Heterorthidae [sont] plats ou, concavo-convexes; l'impression des muscles diducteurs ventraux en éventail n'entoure pas les adducteurs; [le] processus cardinal [est] étroit, avec [un] myophore allongé; [il y a un] dépôt secondaire chez les brachiophores.

Spanish

Save record 2

Record 3 1977-06-29

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Dalmanellidae [have a] convexo-concave to plano-convex profile, [a] ventral interarea [that is] curved, apsacline, [a] dorsal interarea [that is] shorter, anacline, [a] delthyrium and [a] notothyrium [that are] open, [a] coarsely fascicostellate to finely costellate ornament very rarely with hollow costellae, [a] variably developed dorsal sulcus at least in young growth stages; [the] ventral muscle field [is] usually umbonal, broadly cordate to bilobed, with [an] adductor scar rarely enclosed by median diductor lobes; [they have a] cardinal process varying from [a] simple ridge to [an] elaborate trilobed myophore with shaft, bases of [the] simple brachiophore [are] variably disposed, fulcral plates [are] commonly developed; [the] dorsal adductor scar [is] quadripartite, [the] mantle canal system [is] commonly lemniscate in both valves. "L. Ord.-L. Carb. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Dalmanellidae [ont des] brachiophores simples, en lames, sans plaque fulcrale; [ils ont un] champ musculaire ventral bilobé dans la partie antérieure. Il existe cependant chez les jeunes des plaques fulcrales qui, parfois, persistent chez les adultes.

Spanish

Save record 3

Record 4 1977-06-29

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Rhipidomellidae [are] Dorsibiconvex to plano-convex, [the] ventral interarea [is] apsacline to orthocline, [the] dorsal interarea commonly orthocline, both becoming much reduced; [the] delthyrium [is] open, notothyrium with chilidial plates developed rarely, costellae [are] hollow [a] fold and sulcus [are] commonly not well developed; [the] ventral muscle field [is] large, oval to cordate, [the] adductor scars [are] elliptical, completely enclosed by diductors commonly with scalloped margins; [they have a] cardinal process with [a] lobate myophore and [a] short shaft, [the] brachiophores [are] commonly short, blunt with suberect bases, [the] fulcral plates [are] absent; [the] ventral and dorsal mantle canal systems [are] lemniscate. "L. Sil.-U. Perm. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Rhipidomellidae [sont] subcirculaires; [ils ont les] impressions musculaires des diducteurs en éventail, complètement entourées par celles des adducteurs; [des] brachiophores courts; [et n'ont] pas de plaques fulcrales silurien inférieur - permien supérieur.

Spanish

Save record 4

Record 5 1977-06-29

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] Family Linoporellidae [are] subequally biconvex to ventribiconvex, [the] ventral interarea [is] long, curved, apsacline, [the] dorsal interarea [is] shorter, curved, anacline, [the] delthyrium and notothyrium [are] open, [the] fold and sulcus [are] rarely well developed; [the] ventral muscle field [is] variable, [the] dental plates [are] strong; [the] cardinal process [is a] simple ridge, continuous anteriorly with [a] median septum, [the] brachiophores [are] long, bladelike, with [the] bases convergent on to [a] strong median septum to form [a] septalium, fulcral plates [are] present; [the] ventral mantle canal system [is] possibly saccate, [the] dorsal [is] probably lemniscate. "M. Ord.-U. Sil. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Linoporellidae [ont] les brachiophores [qui] se réunissent au septum médian, (...) à la valve dorsale (...)

Spanish

Save record 5

Record 6 1977-06-27

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Stropheodontidae [lack a] functional pedicle and [have] simple teeth and dental plates replaced by denticles subsequently spreading along [the] hinge line; socket ridges [are] abbreviated subsequent to [the] loss of [the] dental plates becoming obsolescent or(...) disappearing completely, exceptionally [form] buttresses to [the] cardinal process lobes; [the] pseudodeltidium [is] initially small, apical, becoming progressively larger and in some stocks ultimately closing [the] delthyrium completely; [the] chilidium [is] initially massive becoming degenerate and in some stocks ultimately completely lost; [the] mantle canal patterns in both valves [are] probably lemniscate; [the] shell substance [is] densely pseudopunctate. "U. Ord.-U. Dev. "

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Stropheodontidae [ont un] Bord cardinal avec [des] crénelures plus ou moins développées et plus ou moins durables.

Spanish

Save record 6

Record 7 1977-06-27

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] subfamily Leptellininae [have a] Strong cardinal process differentiated into [a] sharp median crest and lower lateral ridges on [the] posterior face; [the] lophophore platform [is] wide, extending to [the] postero-lateral margins, with [a] high median crest; [the] ventral mantle canal system [is] saccate to lemniscate, [the] dorsal mantle canal pattern [is] digitate or lemniscate. "L. Ord.-L. Sil. "

French

Domaine(s)
  • Paléontologie
OBS

[les Brachiopodes de la] sous-famille des Leptellininae [ont un] processus cardinal formant une simple crête entre les plaques chilidiales, ou absent; [et un] disque viscéral surélevé. Ce sont des formes essentiellement ordoviciennes.

Spanish

Save record 7

Record 8 1976-06-19

English

Subject field(s)
  • General Scientific and Technical Vocabulary

French

Domaine(s)
  • Vocabulaire technique et scientifique général

Spanish

Save record 8

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