Task: Sentence Expansion
Input (English): This evidence , and " Microraptor " and the troodontid " Anchiornis " , suggests the common ancestor of dromaeosaurs , troodontids , and birds – the ' ancestral paravian ' – may have been very small , at around 65 cm in length and 600 to 700 grams of mass .
Output (English): This evidence , combined with the small size of other primitive relatives such as " Microraptor " and the troodontid " Anchiornis " , indicates that the common ancestor of dromaeosaurids , troodontids , and birds ( which is called the ancestral paravian ) may have been very small , at around 65 cm in length and 600 to 700 grams of mass .