# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/jack-sepkoski
# Generated: 2026-08-13T15:28:32.965Z

schema: https://schema.org/Person
url: "https://fame.am/person/jack-sepkoski"
name: "Jack Sepkoski"
slug: "jack-sepkoski"
description: "Joseph John Sepkoski Jr. was a University of Chicago paleontologist. Sepkoski studied the fossil record and the diversity of life on Earth. Sepkoski and David Raup produced a new understanding of extinction events, by developing a statistical approach to the study of taxonomic diversification. They suggested that the extinction of dinosaurs 66 mya was part of a cycle of mass extinctions that may have occurred every 26 million years. But their most important contribution was the identification of the \"Big 5\" mass extinctions, events that have shaped the evolution of life on earth."
tagline: "American paleontologist (1948-1999)"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1948-07-26"
deathDate: "1999-05-01"
livingStatus: "DECEASED"
scores:
  popularity:           43.12
  momentum:             0
  historical:           10.48027466666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  55
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E5%82%91%E5%85%8B%C2%B7%E5%A1%9E%E7%A7%91%E6%96%AF%E5%9F%BA"
    title: "傑克·塞科斯基"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Jack_Sepkoski"
    title: "Jack Sepkoski"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BF%D0%BA%D0%BE%D1%81%D0%BA%D0%B8%2C_%D0%94%D0%B6%D0%B5%D0%BA"
    title: "Сепкоски, Джек"
    type:  "WIKIPEDIA"
  - url: "https://species.wikipedia.org/wiki/J._John_Sepkoski_Jr."
    title: "J. John Sepkoski Jr."
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%94%D0%B6%D0%B5%D0%BA_%D0%A1%D0%B5%D0%BF%D0%BA%D0%BE%D1%81%D1%8C%D0%BA%D1%96"
    title: "Джек Сепкоські"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q1677203"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump