ceratite

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ceratite

[′ser·ə‚tīt]
(paleontology)
A fossil ammonoid of the genus Ceratites distinguished by a type of suture in which the lobes are further divided into subordinate crenulations while the saddles are not divided and are smoothly rounded.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
(14) descreveram, apos estudo imuno-histoquimico, a presenca de MMP-19 em celulas basais do epitelio apos ceratites ulcerativas, porem sua exata funcao ainda nao foi estabelecida na cornea.
A bacteria Pseudomonas produz dois tipos de MMPs, denominadas elastase e protease alcalina, que sao responsaveis por ceratites ulcerativas agressivas (12).
Em ceratites ulcerativas de camundongos infectadas por herpesvirus, tambem foi notada a presenca de aumento da quantidade das MMPs 2, 8 e 9 logo apos a lesao e um aumento de TIMP-1 e TIMP-2 apenas apos 7 dias da lesao, demonstrando um balanco entre as proteinases e seus inibidores durante a reparacao corneal (24).
Embora creditemos a baixa incidencia de ceratites micoticas, por exemplo, a condicoes climaticas e geograficas, nao podemos descartar que a falha diagnostica, por desconhecimento da doenca, leve a esta prerrogativa.
Ceratites fungicas ulcerativas cursam com blefaroespasmo (SANSOM et al., 2005; GALAN et al., 2009), epifora, quemose e fotofobia (GALAN et al., 2009).
A ceratite fungica configura-se em afeccao frequente em equinos, com potencial risco de perda visual (OLLIVIER et al., 2003; BROOKS, 2010).
Among the ammonoids, the ceratites replaced the goniatites, the tetracoralaria gave way to the exacoralaria that currently continue to form the coral reefs, and other groups like trilobites and fusulines disappeared forever.
In the cephalopod group, the goniatites were substituted by the ceratites (ammonites), and in the corals, the tabulates and tetracorals for hexacorals.
The vertical passage from the "Couches intermediaires" to the Ladinian marine limestones characterizes a general backstepping trend, in which the maximum flooding surface (MFS) is located at the top of the "Calcaires a Ceratites" Formation dated as Ladinian (Duringer and Hagdorn, 1987).
(1987): La zonation par ceratites du Muschelkalk superieur lorrain (Trias, Est de la France).