Crossword clue

“When the first mammals and dinosaurs appeared”

This clue appeared as 14-Down in the NYT Crossword on Sunday, November 23, 2025. The answer has 14 letters.

Answer · 14 lettersFirst appearance

TRIASSICPERIOD

Letters14

Starts withT

Ends withD

Vowels6

Where this clue has appeared

NYT Crossword
Nov 23, 202514 letters→

About this clue

The clue “When the first mammals and dinosaurs appeared” ran in the NYT Crossword on November 23, 2025 as 14-Down. Its answer is a 14-letter phrase that starts with T and ends with D, with 6 vowels, which often points to a phrase, a name or a borrowed word.

See every answer from the puzzle on the NYT Crossword page for November 23, 2025, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

1ADeparted unceremoniously?6 letters 7AContained4 letters 11ATries to get a rise out of5 letters 16ASeeing someone, say7 letters 17A"Couldn't agree more!"4 letters 18A"Couldn't agree more!"7 letters 20ACertain vacation booking in Madrid?13 letters 22AThings from a distant land7 letters

FAQ

What is the answer to the “When the first mammals and dinosaurs appeared” clue?+

The answer is TRIASSICPERIOD (14 letters), from the NYT Crossword of November 23, 2025.

Where has this clue appeared?+

We have seen it 1 time in the NYT Crossword.

How do I find other NYT Crossword answers?+

Open the full list of answers for November 23, 2025, or browse every date on the NYT Crossword hub.