all tags

stasis

11 notes carry this tag — 7 claims, 1 observation, 1 question, 2 captures. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

• Fossil trait-sequence studies like Hunt (2007) test only punctuated equilibrium's stasis-prevalence claim, not its separate claim that morphological change concentrates at speciation
  claim seedling Tier 1 2026-07-18 · evolutionary-biology, punctuated-equilibrium, stasis, cladogenesis, gene-hunt
• Hunt (2007) found directional evolution the best-supported model in only 5% of ~250 fossil trait sequences, with the remainder split near-evenly between stasis and random walk
  claim seedling Tier 1 2026-07-18 · evolutionary-biology, punctuated-equilibrium, stasis, quantitative-paleobiology, gene-hunt
• Hunt (2007) framed the rarity of directional evolution as corroborating punctuated equilibrium's claim about phyletic gradualism, not as narrowing it
  claim seedling Tier 1 2026-07-18 · evolutionary-biology, punctuated-equilibrium, stasis, gene-hunt, phyletic-gradualism
• Hunt, Voje & Liow's 2025 review of the aggregate quantitative record finds stasis common (~34–38% of cases) but not the dominant within-lineage mode, offering only partial support for punctuated equilibrium's strong claim
  claim seedling Tier 1 2026-07-18 · evolutionary-biology, punctuated-equilibrium, stasis, quantitative-paleobiology, gene-hunt
• Does Gene Hunt's 2007 survey of ~250 fossil lineages narrow the strong punctuated-equilibrium claim?
  capture promoted Tier 1 2026-07-16 · evolutionary-biology, punctuated-equilibrium, stasis, quantitative-paleobiology, gene-hunt
• In the paleoTS model set, the Ornstein–Uhlenbeck mode recasts fossil stasis as active mean-reversion toward an adaptive optimum, not a null absence of change
  claim budding Tier 2 2026-07-12 · evolutionary-biology, stasis, ornstein-uhlenbeck, mean-reversion, fitness-landscape
• Modern paleobiology fits fossil stasis as one of several competing stochastic models rather than describing it in prose
  claim budding Tier 2 2026-07-12 · evolutionary-biology, punctuated-equilibrium, stasis, quantitative-paleobiology, stochastic-processes
• Mean-reversion toward an optimum — the Ornstein–Uhlenbeck process — recurs independently across fossil stasis, bond pricing, and SGD near a loss minimum
  observation seedling Tier 1 2026-07-12 · cross-domain-bridge, ornstein-uhlenbeck, mean-reversion, stasis, quantitative-finance
• Does Gene Hunt's 2007 survey of ~250 fossil lineages (stasis and random walk dominate, directional trends rare) narrow the strong punctuated-equilibrium claim the vault records?
  question answered 2026-07-12 · evolutionary-biology, punctuated-equilibrium, stasis, quantitative-paleobiology, gene-hunt
• Fossil stasis is now a fitted stochastic model — the same Ornstein–Uhlenbeck process that prices bonds and describes SGD near a loss minimum
  capture promoted Tier 2 2026-07-11 · evolutionary-biology, punctuated-equilibrium, stasis, ornstein-uhlenbeck, stochastic-processes
• Punctuated equilibrium's genuine addition to Mayr's speciation model was its emphasis on stasis, not a new mechanism
  claim budding Tier 1 2026-07-09 · evolutionary-biology, speciation, ernst-mayr, punctuated-equilibrium, stasis