Denticles

Colonies of S. schenckii are rapid growing and at first moist, flat, and yeastlike, later developing aerial hyphae. They are initially white, becoming brown to black with age. The conidia are of two kinds in most fresh isolates. Hyaline, one-celled conidia develop solitarily upon denticles along the hyphae laterally from sympodial,... 

The colonies of W. dermatitidis are moist and at first yeastlike, developing some aerial hyphae with age. They are olive to black. Distinct conidiophores are absent. The conidiogenous cells are phialides which do not have collarettes. Some conidiogenous cells appear to possess a group of slightly raised, truncate denticles at their apices that occur as a result of sympodial development. Rare annellides may be produced by isolates of this fungus. The one-celled,... 

The natural skin is covered with denticles or bumps called placoid scales, which are unique to sharks, rays and skates. These consist largely of caldum carbonate and calcium phosphate and are mote mineralised than normal fish scales (which have a higher collagen content). The denticles appear as spots, some tiny, and some lai r and spiky. 

It is uncommon to find a shagreen fiike, but some were made at the hei t of the material s popularity in the twentieth century. They are not convindi as the natural product has a subtly uneven surface due to the denticles, while a ke is made of a printed laminate and is totally smooth. 

Conidiogenesis polyblastic, with conidia either on sympodially produced denticles of terminal conidiogenous cells or on densely crowded, rapidly collapsing denticles laterally along intercalary cells... 

Conidiiferous denticles persistent, mostly in terminal position,... 

Conidiiferous denticles scattered along cells of fertile hyphae, soon... 

Diagnosis Conidiophores ascending from the attacked animal, unbranched, repeatedly septate from each cell a narrow conidiogenous neck arises that develops a succession of almost beauveria-like denticles bearing single conidia conidia globose, 3.5-4.5 pm diam, with a conspicuous basal slime pad. 

Conidiogenous cells cylindrical to clavate, bearing multiple apical or subapical denticles well organized in a hymenial layer on... 

Conidiogenous cells with multiple short denticles.17... 

Conidiogenous cells produced directly from surface of synnema or host, lacking macronematous conidiophores denticles... 

Conidia arising from inconspicuous denticles on the upper portion of a cylindrical conidiogenous cell. On spiders. .. 13. Granulomanus... 

Diagnosis Conidiophores verticillate, densely branching. Conidiogenous cells with bottle-shaped base apex extending into a short rachis with conspicuous, conical denticles. Conidia single-celled, hyaline, sub-globose, dry, with a basal skirt or hilum. 

Lloyd RM (1968) Oxygen isotope behavior in the sulfate-water system. J Geophys Res 73 6099-6110 Lowenstam HA (1962) Magnetite in denticle capping in recent chitons (polyplacophora). Geol Soc Am Bull 73 435... 

The fiiUy automated spreading process is driven and controlled by an encoder. Using a special belt with metal denticles fixed to one side of the spreading table, the encoder system counts the number of denticles and recalculates them in the distance (metres inches) from the start point. This defines the placement coordinates of the spreader truck on the spreading table at a given moment. 

Alisina and Trematobolus demonstrate more advanced hinge structures in obolel-lide valves. Paired denticles, composed entirely of secondary shell, flank a concave pseudodeltidium in these genera (Fig. 18.1(7)). Shallow, closely placed sockets are discernible on the anterolateral sides of a narrow notothyrial platform, which divides medially narrow dorsal propareas (Fig. 18.1(5)). Homologues of the internal oblique muscles of early oboleUides were attached dorsally behind the rotation axis so that they could have acted as diductors. The forces produced by the action of... 

Oina rotunda Popov and Tikhonov. Raised muscle platform (6 2) raised notothyrial platform (12 2) paired denticles on anterise (14 2). 

Elasmobranch fishes (sharks, rays, and skates) have a unique skin structure which has adapted for different species to serve various purposes. Their skin is covered with miniscule scales that are extremely similar to teeth (hard enamel outside with a pulpy inside) in which the base of each scale is embedded in the surface of the skin. These scales are known as placoid scales or denticles. Sharks (Fig. 1), in particular, have a chain of evolutionary development dating back 400 million years, with some of the youngest species of highly adapted fast-swimming sharks (e.g. the shortfin mako shark hums oxyrinchus) dating back approximately 8 million years. To meet the needs of various species, the microstructure of the denticles has adapted to serve four essential functions. The primary purpose for this bony skin is protection from predators and or prey as well as ectoparasites. A secondary purpose for most species is incorporation... 

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