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ÈéÀ๲Óеģ©£º1. amniote egg. 2. temporal opening. 3. canine tooth. 4. c
oronoid process. 5. erect gait. 6. 2-3-3-3-3 toe bones. 7. secondary pal
ate. 8. double condyle. 9. enlarged dentary. 10. complex jaw muscles. 11
. differentiated teeth. 12. tympanic bone. 13. quadrate/articular hearin
g. 14. loss of third eye. 15. diaphragm. 16. long maternal care (milk?).
17. hair. 18. forward ilium. 19. single hares. 20. dentary/squamosal ja
w joint. 21. loss of post orbital bar. 22. fused neck ribs. 23. 2 rooted
teeth. 24. epiphyses/terminal growth. 25. big brain. 26. live birth. 27
. singlelower jaw bone.¡¡¡¡¶øµ±ÎÒÃÇÑо¿Õ⼸Íò¾ßʼ×æÊ޵Ļ¯Ê¯±ê±¾£¬·¢ÏÖËüÃÇ»ò¶à
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±ßµÄÊý×ÖΪËüÃǾßÓеIJ¸ÈéÀàÌØÕ÷µÄ±àºÅ£©Anapsida: 1Pelycosauria: 1,2,3
Eotheriodonia: 1,2,3,4
Gorgonopsia: 1,2,3,4,5Therocephalia: 1,2,3,4,5,6,7
Cynodontia: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18
Advanced Cyno.: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21
Prororheria: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,
24
Placentals: all of 27 mammalian characters
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