那是什么种类的胚胎化石呢？
当时发现的“化石”更准确地说是胚胎化石。[{'character': '当', 'pinyin': 'dang1', 'highest pitch': 11.12, 'lowest pitch': 10.26, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 9.35, 'lowest pitch': 8.31, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 9.29, 'lowest pitch': 8.31, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 9.31, 'lowest pitch': 6.97, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 7.01, 'lowest pitch': 6.82, 'duration': 0.08, 'prosody hierarchy': '#1'}, {'character': '化', 'pinyin': 'hua4', 'highest pitch': 10.37, 'lowest pitch': 7.01, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '石', 'pinyin': 'shiii2', 'highest pitch': 9.35, 'lowest pitch': 5.64, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.04}, {'character': '更', 'pinyin': 'geng4', 'highest pitch': 10.98, 'lowest pitch': 9.02, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '准', 'pinyin': 'zhuen3', 'highest pitch': 9.02, 'lowest pitch': 5.27, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '确', 'pinyin': 'qve4', 'highest pitch': 7.52, 'lowest pitch': 5.34, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '地', 'pinyin': 'de5', 'highest pitch': 7.01, 'lowest pitch': 5.88, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '说', 'pinyin': 'shuo1', 'highest pitch': 8.09, 'lowest pitch': 5.92, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 14.5, 'lowest pitch': 6.48, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '胚', 'pinyin': 'pei1', 'highest pitch': 9.3, 'lowest pitch': 8.53, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '胎', 'pinyin': 'tai1', 'highest pitch': 9.81, 'lowest pitch': 9.28, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '化', 'pinyin': 'hua4', 'highest pitch': 10.37, 'lowest pitch': 6.8, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '石', 'pinyin': 'shiii2', 'highest pitch': 9.35, 'lowest pitch': 4.73, 'duration': 0.33, 'prosody hierarchy': '#4'}]