discoidal


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discoidal

(embryology) (of the blastoderm) having a disc-like shape where it forms a single layer in early development on top of the yolk, as in birds and reptiles.
References in periodicals archive ?
(2010), it was shown that, in a first approximation, the condition for the stability of the discoidal structure, composed mainly by particles that describe nearly circular motions, is that both epicyclic and vertical frequencies are positive, (Binney & Tremaine, 2008; Danby, 1988), i.e
Four of the five funerary markers in Placentia have a tabular form, in contrast to the many discoidal stones that can still be seen in many eastern Basque villages of Zuberoa (Soule), Benafarroa (Lower Navarre), Nafarroa (Navarre), and Lapurdi (Labourd).
a dcha.: Tipo discoidal cilindrico prototipica (Dehesa de Rio Fortes 25), ligeramente atipica (Dehesa de Rio Fortes 40) y atipica (Galisancho 441).
C., aunque sin procedencia, de pie alzado rematado en una placa discoidal y con resorte bilateral (Cabre y Moran, 1977: 132).
Both sheet-like bryozoa with the encrustation area of 0.25 [cm.sup.2] and a discoidal echinoderm holdfast with the encrustation area of 0.2 [cm.sup.2] are represented by one specimen.
El registro fosil de la unidad Chert y Calizas de Nutibara corresponde a restos de foraminiferos, radiolarios, espiculas reemplazadas por carbonato (?) y ostracodos (?), reemplazados por calcita esparitica; predominan los fosiles de forma circular o discoidal con la concha delgada; el tamano promedio de los restos fosiles es de 0,04 mm a 0,25 mm, con las caparazones reemplazadas por calcita en algunos casos fibrosa; ooides y peloides de forma circular, con estructura concentrica o sin estructura a manera de calciesferas de tamanos generalmente menores a 0,16 mm, los cuales flotan en la matriz micritica (Rodriguez et al., 2010) (FIGURA 1[grados]C).
Tegminas y alas hialinas de mayor tamano que el abdomen, con manchas marrones en el area discoidal. En la superficie dorsal del abdomen se presenta una coloracion rojo claro que cubre la mayor parte de su longitud (Figura 11b).
La subfamilia Desmodontinae (Bonaparte 1845) posee caracteristicas que la distinguen de otras familias de murcielagos Neotropicales: Apendice nasal rudimentario de estructura discoidal en forma de herradura o como protuberancia (Altenbach 1979, Greenhall et al.
4) Pendiente discoidal con una perforacion central (figura 4): 16 piezas completas (2 de la ofrenda 149 y 14 de la ofrenda V).
In this portrait, Jobe Charley is pictured in a formal pose, seated against a plain backdrop, wearing eagle feather warbonnet, beaded buckskin jacket, panel leggings and hider, discoidal bead-strung loop necklace, and beaded gloves with a design of eagle, patriotic shield and US flags.
granulosa had a discoidal shape and the surface was having granules as well as the septal ridges.