Wikipedia - Benutzerbeiträge [de]

Wiwaxia

2006-03-16T02:12:20Z

Cantara: link annelid

'''Wiwaxia''' is an extinct species known mainly from fossils found in Canada's [[Burgess Shale]] deposits. Although Wiwaxia is similar to a [[mollusk]], it does not really fit this group because of its sclerites (armor). It is still controversial to what group Wiwaxia really belongs.

In 1899, Wiwaxia was first described on the basis of a single spine discovered in a Middle [[Cambrian]] bed on Mount Stephen, which lies across the valley from the Burgess Shale site. Later, after [[Charles Doolittle Walcott]]'s discovery of the Burgess Shale site in [[1909]], complete specimens became available.

Wiwaxia has long spines that project in two rows along the back. These evidently provided some protection from predators. The rest of the upper (dorsal) surface is covered with small, flat, overlapping hard plates, termed sclerites. Each of these little scales was attached with a root-like base and it is assumed Wiwaxia grew by [[molting]] these plates from time to time. Since there are none on the bottom (ventral) surface, the animal partly resembles the [[slug]], a member of the mollusk family. However, mollusks do not have any sclerite armor, so the animal's affinity to present day species is unsettled. It did have an anterior [[jaw]] with two rows of teeth on the [[ventral]] surface, suggesting it was another bottom feeder. Fossil sizes range from 1/8 to 2 inches.

Wiwaxia has recently been proposed as an [[annelid]] or at least a close relative of one. The first breakthrough in establishing Wiwaxia's affinities came from a postgraduate paleontologist at Harvard who was inspired by [[Stephen Jay Gould]]'s lectures a decade or so ago. This young researcher, Nick Butterfield, managed to extract pieces of the scalelike armour from the fossilized animal. When Butterfield studied their microstructure, he noticed immediately that it was the same as that of the chitinous bristles (chaetae) that project from the bodies of such modern annelids as earthworms. His conclusion, published in 1990, was that Wiwaxia was not a mollusk at all but an annelid.

==References==

*National Museum of Natural History (2005) [http://www.nmnh.si.edu/paleo/shale/pwiwax.htm ''Wiwaxia corrugata'']. Retrieved on Oct. 26, 2005.

[[Category:Fossils]]

[[fr:Wiwaxia]]

Carnegie Hill

2006-03-09T22:52:51Z

Cantara: added nyc template

'''Carnegie Hill''' is a neighborhood within the [[Upper East Side]] of [[Manhattan]] in [[New York City]]. Roughly speaking, it is bounded by 86th St. on the south, Third Avenue on the east, 98th St. (i.e., [[Spanish Harlem]]) on the north, and [[Fifth Avenue (Manhattan)|Fifth Avenue]] (i.e., [[Central Park]]) on the west.

The neighborhood is named for the mansion that [[Andrew Carnegie]] built at Fifth Avenue and 91st St. in [[1901]]. The mansion is today the [[Cooper-Hewitt, National Design Museum]], a branch of the [[Smithsonian Institution]]

One of New York's most prestigious and expensive neighborhoods, most of the neighborhood's opulent [[townhouses]], built in the early [[twentieth century]], are protected as part of the Carnegie Hill Historic District. Many of the townhouses are single family residences, although some have been converted to [[apartments]].

Known for its "[[suburban]]" family-friendly atmosphere, Carnegie Hill boasts many fine restaurants, upscale boutiques, and gourmet food stores. Following New York City's tradition of similar stores residing next to one another, the stretch of [[Madison Avenue]] that runs through Carnegie Hill is known for its numerous children's clothing boutiques. The neighborhood also includes several schools, including [[The Dalton School|Dalton]], Nightengale, and Sacred Heart.

Celebrity residents of Carnegie Hill include "Today Show" host [[Katie Couric]], actor [[Paul Newman]] and his wife, [[Joanne Woodward]], actor [[Kevin Kline]], and, until recently, actor and director [[Woody Allen]], who sold his Carnegie Hill townhouse in 2004 for well over $20,000,000.

Also within Carnegie Hill along [[Fifth Avenue]] is the [[National Academy Museum]] in the former Huntington mansion, the [[Neue Gallerie]] in the former Vanderbilt mansion, and the [[Jewish Museum]] in the former Warburg mansion. The [[El Museo del Barrio]] and the [[Museum of the City of New York]] are both just north of Carnegie Hill also along Fifth Avenue; together these museums partly comprise the famed "[[Museum Mile]]". The [[92nd Street Y]] is a cultural institution located on [[Lexington Avenue]].

Movies set in Carnegie Hill include [[Devil's Advocate]], [[A Perfect Murder]], and [[Ransom]].

==See also==
* [[Mount Sinai Hospital, New York|Mount Sinai Hospital]]
* [[Solomon R. Guggenheim Museum]]

==External link==
* [http://ndm.si.edu/ Cooper-Hewitt, National Design Museum]

[[Category:Manhattan neighborhoods]]
[[Category:Andrew Carnegie]]

[[es:Carnegie Hill]]

{{New York City}}

Carnegie Hill

2006-03-09T22:50:45Z

Cantara: added schools

Benutzer:Cantara

2006-03-02T00:56:50Z

Cantara:

[[en:User:Cantara]]