Transitional fossils (or missing links) are the fossilised remains of lifeforms that show features typical of two distinct groups. It may be a rare fossil, such as "Archaeopteryx", which shows early features of a group which later becomes widespread.
t ɹ æ n s ɪ ʃ ə n ə l WORD_BOUNDARY f ɑ s ə l z WORD_BOUNDARY ɔ ɹ WORD_BOUNDARY m ɪ s ɪ ŋ WORD_BOUNDARY l ɪ ŋ k s WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY ð ə WORD_BOUNDARY f ɑ s ə l aɪ z d WORD_BOUNDARY ɹ ɪ m eɪ n z WORD_BOUNDARY ʌ v WORD_BOUNDARY l aɪ f f ɔ ɹ m z WORD_BOUNDARY ð æ t WORD_BOUNDARY ʃ oʊ WORD_BOUNDARY f iː t̠ʃ ə ɹ z WORD_BOUNDARY t ɪ p ɪ k ə l WORD_BOUNDARY ʌ v WORD_BOUNDARY t uː WORD_BOUNDARY d ɪ s t ɪ ŋ k t WORD_BOUNDARY ɡ ɹ uː p s WORD_BOUNDARY ɪ t WORD_BOUNDARY m eɪ WORD_BOUNDARY b iː WORD_BOUNDARY ʌ WORD_BOUNDARY ɹ ɛ ɹ WORD_BOUNDARY f ɑ s ə l WORD_BOUNDARY s ʌ t̠ʃ WORD_BOUNDARY ʌ z WORD_BOUNDARY ɑ ɹ k iː ɑ p t ə ɹ ɹ ɪ k s WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY ʃ oʊ z WORD_BOUNDARY ɜː l i WORD_BOUNDARY f iː t̠ʃ ə ɹ z WORD_BOUNDARY ə v ə WORD_BOUNDARY ɡ ɹ uː p WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY l eɪ t ə ɹ WORD_BOUNDARY b ɪ k ʌ m z WORD_BOUNDARY w aɪ d s p ɹ ɛ d WORD_BOUNDARY