Research topic:Valens

Pictures from Google Image Search

Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture
Find more facts and information on our topic page about Valens

Van Valen's ‘law’

A Dictionary of Zoology | 1999 | | © A Dictionary of Zoology 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

Van Valen's ‘law’ When plotted as cumulative curves on a logarithmic scale, the duration frequencies of many species tend to show a more or less straight-line relationship with time. In effect, taxa generally become extinct regardless of their age. Duration frequencies vary greatly among different groups (e.g. on average, bivalve genera last 10 times longer than mammalian genera). The ‘law’ is named after its discoverer, L. Van Valen.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

MICHAEL ALLABY. "Van Valen's ‘law’." A Dictionary of Zoology. 1999. Encyclopedia.com. 9 Dec. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Van Valen's ‘law’." A Dictionary of Zoology. 1999. Encyclopedia.com. (December 9, 2009). http://www.encyclopedia.com/doc/1O8-VanValenslaw.html

MICHAEL ALLABY. "Van Valen's ‘law’." A Dictionary of Zoology. 1999. Retrieved December 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-VanValenslaw.html

Learn more about citation styles

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

VALENS' SUPPORTERS SEEK NOMINATION TO HALL OF FAME;BANDS TO HONOR LATINO POP STAR.(News)
Newspaper article from: Daily News (Los Angeles, CA); 5/9/1997; 700+ words ; ...Villarreal Daily News Staff Writer Ritchie Valens, the rock 'n' roll legend behind the...on the Hollywood Walk of Fame. Now, Valens' family, friends and a record company...this weekend's third annual Ritchie Valens May Festival at Ritchie Valens Recreation...
VALENS' MUSIC LIVES ON; PACOIMA NATIVE MADE THE VALLEY AND THE NATION SING.(News)
Newspaper article from: Daily News (Los Angeles, CA); 7/20/1999; 700+ words ; ...Andres Staff Writer Like a meteor, Ritchie Valens' life was bright and brief. But Valens, born Richard Steven Valenzuela, left an impact...Pacoima bears his name, and a campaign to get Valens into the Rock and Roll Hall of Fame is stronger...
Profile: Ritchie Valens' "La Bamba" one of the 100 most important American musical works of the 20th century
Transcript from: NPR Weekend Edition - Sunday; 7/15/2000; ; 700+ words ; 00-00-0000 Profile: Ritchie Valens' La Bamba one of the 100 most important...audience. That teen-ager, Ritchie Valens, was made famous. La Bamba is on NPR...words of a very old folk song that Ritchie Valens made a rock 'n' roll classic. (Soundbite...
FANS' LOVE OF VALENS BURNS ON.(News)
Newspaper article from: Daily News (Los Angeles, CA); 5/8/1998; 700+ words ; ...Staff Writer Like his 1950s rock idol Ritchie Valens, Jim Wegner has always had a fear of flying...anxiety is worth it for Wegner, 34, a die-hard Valens fan who comes west to visit Valens' hometown for the fourth annual Ritchie Valens...
Funai Electric and Valens Semiconductor to Demonstrate HDBaseT(TM) Technology at IFA Conference in Berlin; Technology Enables the Distribution of Multimedia Content in the High-Growth HD Home Entertainment Market.(Conference news)
News Wire article from: Marketwire Canada; 8/24/2009; 700+ words ; ...24, 2009 (Marketwire via COMTEX) -- Valens Semiconductor and Funai Electric will jointly demonstrate Valens's HDBaseT(TM) technology for advanced...entertainment consumer electronics products. Valens's VS100 chip will be activated to connect...
PRIDE OF PACOIMA VALENS NEXT TO JOIN ROCK'S HALL OF FAME.(News)
Newspaper article from: Daily News (Los Angeles, CA); 12/13/2000; 700+ words ; ...age 17, rock 'n' roll pioneer Ritchie Valens won the honor Tuesday his fans had long...fans and musicians to get Pacoima-born Valens named to the prestigious Hall of Fame...Considered the first Latino rocker, Valens is best known for the classic rock songs...
COUSIN TO PAY TRIBUTE TO VALENS
Newspaper article from: The Record (Bergen County, NJ); 2/4/1999; ; 700+ words ; ...County, NJ) 02-04-1999 COUSIN TO PAY TRIBUTE TO VALENS -- HE'LL SING AT SITE OF FINAL CONCERT By RICHARD...Also in 2 Star P, 1 Star Early Biographical: LEE VALENS Lee Valens remembers hearing his cousin, Ritchie Valens, singing...
`La Bamba': Reviving The Legend;Los Lobos, Rhino Recall Ritchie Valens' Brilliance
Newspaper article from: The Washington Post; 7/22/1987; ; 700+ words ; ...n' roll legends, the recorded legacy of Ritchie Valens is slight. Valens had only been recording for about six months when...killed Buddy Holly and the Big Bopper. Nonetheless, Valens' legend would be secure if it rested wholly on his...
ROCKIN' ROLE MODEL PACOIMA PARTY PAYS TRIBUTE TO VALENS.(News)
Newspaper article from: Daily News (Los Angeles, CA); 3/26/2001; 700+ words ; ...music festival Sunday to honor Ritchie Valens, the late musical icon who grew up in...celebration, with acquaintances and members of Valens' family present to pay homage to the...La Bamba'' famous around the world. Valens' tragic death in a plane crash on Feb...
The Reveries of Valens' Donna; In `La Bamba,' Echoes for the Girl in the Song
Newspaper article from: The Washington Post; 9/4/1987; ; 700+ words ; ...the road. "I had a girl," Ritchie Valens crooned, "Donna was her name...already recognized it. It was the same song Valens had sung to her over the telephone a year...months later when the 17-year-old Valens died in the same plane crash that killed...

Related entries from encyclopedias, dictionaries, and thesauruses

Valens, Ritchie: 1941-1959: Performer
Book article from: Contemporary Hispanic Biography Ritchie Valens: 1941-1959: Performer Although his...recording and concert dates, Ritchie Valens attained a place in music history as the...the music died" in rock history, yet Valens's legend grew after his death with the...
Valens, Richie
Book article from: Contemporary Musicians Richie Valens Singer For the Record … Ritchie Valens died very young, yet his legacy remains a cornerstone of the history of rock and roll. Valens was a natural singer and performer, in touch with his...
Ritchie Valens
Encyclopedia entry from: Encyclopedia of World Biography Ritchie Valens In a recording career that spanned less...released during his lifetime, Ritchie Valens (1941-1959), born Richard Steven...P. Richardson (The Big Bopper). Valens's music is admired for his gritty proto...
Valens
Book article from: The Columbia Encyclopedia, Sixth Edition Valens , c.328-378, Roman emperor of the East...Brother and coregent of Valentinian I , Valens followed in most respects his brother...the Romans, they rebelled, and in 378, Valens was killed in the battle of Adrianople...
Fritigern
Book article from: The Columbia Encyclopedia, Sixth Edition ...thus gained the support of Emperor Valens . Fleeing the invading Huns, Fritigern was given permission (376) by Valens to cross the Danube and enter Roman...in 378 Fritigern defeated and killed Valens at the battle of Adrianople. The Goths...

Related research topics

For students and teachers!

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including:

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including: