Question: when do bryophytes (including mosses liverworts and hornworts) first appear in the fossil record
[{'answer': 'around the Middle Ordovician', 'provenance': [{'wikipedia_id': '15537603', 'title': 'Timeline of plant evolution', 'start_paragraph_id': 12, 'start_character': 277, 'end_paragraph_id': 12, 'end_character': 305, 'bleu_score': 1.0, 'section': 'Section::::Paleozoic flora.:Ordovician flora.\n'}]}, {'provenance': [{'wikipedia_id': '15537603', 'title': 'Timeline of plant evolution', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 1103, 'bleu_score': 0.9881300380564421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17530061946743777118}, 'section': 'Section::::Paleozoic flora.:Ordovician flora.\n'}]}]