Epoch is an anthology

Anthology

An anthology is a collection of literary works chosen by the compiler. It may be a collection of poems, short stories, plays, songs, or excerpts...

 of science fiction stories edited by Roger Elwood

Roger Elwood

Roger Elwood was an American science fiction writer and editor, perhaps best known for having edited a large number of anthologies and collections for a variety of publishers in the early 1970s.-Biography:...

 and Robert Silverberg

Robert Silverberg

Robert Silverberg is an American author, best known for writing science fiction. He is a multiple nominee of the Hugo Award and a winner of the Nebula Award.-Early years:...

, issued in hardcover by Berkley Putnam in 1975 and in paperback by Berkley in 1977. The table of contents includes Arm by Larry Niven

Larry Niven

Laurence van Cott Niven / ˈlæri ˈnɪvən/ is an American science fiction author. His best-known work is Ringworld , which received Hugo, Locus, Ditmar, and Nebula awards. His work is primarily hard science fiction, using big science concepts and theoretical physics...

; Angel of Truth by Gordon Eklund

Gordon Eklund

Gordon Eklund is a Nebula Award-winning, American science fiction author whose works include the "Lord Tedric" series and two of the earliest original novels based on the 1960s Star Trek TV series. He has written under the pen name Wendell Stewart, and in one instance under the name of the late E. E...

; Mazes by Ursula K. Le Guin

Ursula K. Le Guin

Ursula Kroeber Le Guin is an American author. She has written novels, poetry, children's books, essays, and short stories, notably in fantasy and science fiction...

; For All Poor Folks at Picketwire by R. A. Lafferty

R. A. Lafferty

Raphael Aloysius Lafferty was an American science fiction and fantasy writer known for his original use of language, metaphor, and narrative structure, as well as for his etymological wit...

; Growing Up in Edge City by Frederik Pohl

Frederik Pohl

Frederik George Pohl, Jr. is an American science fiction writer, editor and fan, with a career spanning over seventy years — from his first published work, "Elegy to a Dead Planet: Luna" , to his most recent novel, All the Lives He Led .He won the National Book Award in 1980 for his novel Jem...

; Durance by Ward Moore

Ward Moore

Ward Moore was the working name of American author Joseph Ward Moore. Moore grew up in New York City, and later moved to Chicago, and then to California....

; The Ghost of a Model T by Clifford D. Simak

Clifford D. Simak

Clifford Donald Simak was an American science fiction writer. He was honored by fans with three Hugo awards and by colleagues with one Nebula award and was named the third Grand Master by the Science Fiction and Fantasy Writers of America in 1977.-Biography:Clifford Donald Simak was born in...

; Planet Story by Kate Wilhelm

Kate Wilhelm

Kate Wilhelm is an American writer whose works include science fiction, mystery, and fantasy.- Career :Wilhelm was born in Toledo, Ohio....

; Graduation Day by W. Macfarlane; Timetipping by Jack Dann

Jack Dann

Jack Dann is an American writer best known for his science fiction, an editor and a writing teacher, who has lived in Australia since 1994. He has published over seventy books, in the majority of cases as editor or co-editor of story anthologies in the science fiction, fantasy and horror genres...

; Encounter with a Carnivore by Joseph L. Green

Joseph L. Green

Joseph Lee Green is an American science fiction author and a charter member of the Science Fiction Writers of America. He is a prolific short story author best known for his novel Gold the Man. His work has been translated into German, Italian, Spanish, French, Polish and Dutch.-Biography:Joseph L...

; Lady Sunshine and the Magoon of Beatus by Alexei Panshin

Alexei Panshin

Alexis Adams Panshin is an American author and science fiction critic. He has written several critical works and several novels, including the 1968 Nebula Award-winning novel Rite of Passage and the 1990 Hugo Award winning study of science fiction The World Beyond the Hill .-Other works:Panshin...

 and Cory Panshin

Cory Panshin

Cory Panshin is an American science fiction critic and writer. She often writes in collaboration with her husband, Alexei Panshin. The Panshins won the Hugo award for Best Non-Fiction Book in 1990 for The World Beyond the Hill, a massive history of science fiction.-External links:* Cory Panshin's...

; ...for a single yesterday by George R. R. Martin

George R. R. Martin

George Raymond Richard Martin , sometimes referred to as GRRM, is an American author and screenwriter of fantasy, horror, and science fiction. He is best known for A Song of Ice and Fire, his bestselling series of epic fantasy novels that HBO adapted for their dramatic pay-cable series Game of...

; Bloodstream by Lou Fisher; Existence by Joanna Russ

Joanna Russ

Joanna Russ was an American writer, academic and feminist. She is the author of a number of works of science fiction, fantasy and feminist literary criticism such as How to Suppress Women's Writing, as well as a contemporary novel, On Strike Against God, and one children's book, Kittatinny...

; Interface by A. A. Attanasio

A. A. Attanasio

Alfred Angelo Attanasio, born on September 20, 1951 in Newark, New Jersey, is an author of fantasy and science fiction. His science-fiction novel Radix was nominated for the 1981 Nebula Award for Best Novel and was followed by three other novels, the four books, together, comprising the critically...

; Blooded on Arachne by Michael Bishop

Michael Bishop

Michael Bishop may refer to:* Michael Bishop, Baron Glendonbrook , British businessman and politician* Michael Bishop , American science fiction/fantasy author...

; Leviticus: In the Ark by Barry N. Malzberg

Barry N. Malzberg

Barry Nathaniel Malzberg is an American writer and editor, most often of science fiction and fantasy.-Overview:Initially in his post-graduate work Malzberg sought to establish himself as a playwright as well as a prose-fiction writer. His first two published novels were issed by Olympia Press...

; Cambridge, 1:58 A.M. by Gregory Benford

Gregory Benford

Gregory Benford is an American science fiction author and astrophysicist who is on the faculty of the Department of Physics and Astronomy at the University of California, Irvine...

; Run from the Fire by Harry Harrison

Harry Harrison

Harry Harrison is an American science fiction author best known for his character the Stainless Steel Rat and the novel Make Room! Make Room! , the basis for the film Soylent Green...

; The Aperture Moment by Brian W. Aldiss; Nightbeat by Neal Barrett, Jr.

Neal Barrett, Jr.

Neal Barrett, Jr. is a writer of fantasy, science fiction, mystery/suspense, and historical fiction. His story "Ginny Sweethips' Flying Circus" was nominated for both the 1988 Nebula Award for Best Novelette and the 1989 Hugo Award for Best Novelette...

; Uneasy Chrysalids, Our Memories by John Shirley

John Shirley

John Shirley is an American fantasist, author of noir fiction, and science-fiction writer. Shirley is a prolific writer of novels and short stories, TV scripts and screenplays who has published over 30 books and 10 collections...

; and The Dogtown Tourist Agency by Jack Vance

Jack Vance

John Holbrook Vance is an American mystery, fantasy and science fiction author. Most of his work has been published under the name Jack Vance. Vance has published 11 mysteries as John Holbrook Vance and 3 as Ellery Queen...

.

Each story has an afterword. Several were nominated for and/or won awards, and the Gregory Benford

Gregory Benford

Gregory Benford is an American science fiction author and astrophysicist who is on the faculty of the Department of Physics and Astronomy at the University of California, Irvine...

 story was expanded into the novel Timescape

Timescape

Timescape is a 1980 novel by science fiction writer Gregory Benford . It won the 1980 Nebula and British Science Fiction Awards, and the 1981 John W. Campbell Memorial Award for Best Science Fiction Novel...

.

The anthology

Anthology

An anthology is a collection of literary works chosen by the compiler. It may be a collection of poems, short stories, plays, songs, or excerpts...

 was an attempt to portray the "state of the art

State of the art

The state of the art is the highest level of development, as of a device, technique, or scientific field, achieved at a particular time. It also refers to the level of development reached at any particular time as a result of the latest methodologies employed.- Origin :The earliest use of the term...

" of science fiction

Science fiction

Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 at the time it was published, and is important to the field on that basis. Most of the writers are considered "name" providers of science fiction

Science fiction

Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 material and several are multiple award-winners.

"Blooded on Arachne" was nominated for the Nebula award

Nebula Award

The Nebula Award is given each year by the Science Fiction and Fantasy Writers of America , for the best science fiction/fantasy fiction published in the United States during the previous year...

 in 1976.

"Timescape" won the Nebula Award

Nebula Award

The Nebula Award is given each year by the Science Fiction and Fantasy Writers of America , for the best science fiction/fantasy fiction published in the United States during the previous year...

 in 1981.

"Growing Up in Edge City" was nominated for the Nebula Award

Nebula Award

The Nebula Award is given each year by the Science Fiction and Fantasy Writers of America , for the best science fiction/fantasy fiction published in the United States during the previous year...

 in 1976.

"ARM" was nominated for the Hugo Award

Hugo Award

The Hugo Awards are given annually for the best science fiction or fantasy works and achievements of the previous year. The award is named after Hugo Gernsback, the founder of the pioneering science fiction magazine Amazing Stories, and was officially named the Science Fiction Achievement Awards...

 in 1976.

Robert Silverberg won the Hugo Award

Hugo Award

The Hugo Awards are given annually for the best science fiction or fantasy works and achievements of the previous year. The award is named after Hugo Gernsback, the founder of the pioneering science fiction magazine Amazing Stories, and was officially named the Science Fiction Achievement Awards...

for "Professional Editor" in 1976.

Despite that all, the anthology is relatively obscure and is out of print at this time.