Geological Time Scale

noun the arrangement of events in the order of their occurrence

• The historian meticulously studied the chronology of events to accurately portray the sequence of historical events.
• I need to double-check the chronology of dates for my history project.
• I totally messed up the chronology of that story I was telling, oops!
• The chronology of her life events seemed to unfold like a carefully scripted movie plot.

noun a division of time that is longer than an era and shorter than a period

• The Renaissance is considered a significant epoch in European history.
• The 90s were a cool epoch for music.
• That party was lit, it was an epoch!
• The birth of the internet marked a new epoch in human communication.

noun Aalenian

• The Aalenian stage is a subdivision of the Middle Jurassic period.
• I read that the Aalenian stage is from the Middle Jurassic period.
• Yo, did you know about the Aalenian stage in the Middle Jurassic period?
• Just like how the Aalenian stage marks a specific time period, we all have our own defining moments in life.

noun a type of extinct crinoid marine animal that lived during the Paleozoic era

• The agassizocrinus is an extinct genus of crinoids that lived during the Ordovician period.
• Did you know that the agassizocrinus was a type of sea creature that lived a long time ago?
• That agassizocrinus thingamajig was like a fancy underwater plant back in the day.
• The agassizocrinus stood tall like a majestic tree in the ancient ocean.