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history:evolution [2020/09/02 09:36]
gary1 [mammals]
history:evolution [2020/09/02 09:37] (current)
gary1 [mammals]
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                     * mammals (201-227mya; females have breasts which produce milk, brain has a neocortex, middle ear has 3 bones and skin has fur or hair)                     * mammals (201-227mya; females have breasts which produce milk, brain has a neocortex, middle ear has 3 bones and skin has fur or hair)
                       * see also: [[evolution_mammals]]                       * see also: [[evolution_mammals]]
-                        * monotremes c110mya (egg laying mammals)+                        * **monotremes** c110mya (egg laying mammals)
                           * platypus                           * platypus
                           * echidna                           * echidna
-                        * theria (not egg laying, retrovirus enabled syncytins proteins which allowed placentae, and lost the coracoid bone) +                        * **theria** (not egg laying, retrovirus enabled syncytins proteins which allowed placentae, and lost the coracoid bone) 
-                          * eutherian mammals c161mya (amniotic sac surrounds the fetus, lack epipubic bones)+                          * **eutherian mammals** c161mya (amniotic sac surrounds the fetus, lack epipubic bones)
                             *atlantogenata (105mya)                             *atlantogenata (105mya)
                               * afrotheria: aardvarks, elephants, sea cows, dugongs                                * afrotheria: aardvarks, elephants, sea cows, dugongs 
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                                            *catarrhini (//Old World Monkeys//) - 40 mya                                            *catarrhini (//Old World Monkeys//) - 40 mya
                                              * see also [[ev_human]]                                              * see also [[ev_human]]
-                          * metatherians c125mya in Asia (give birth to relatively undeveloped young) +                          * **metatherians** c125mya in Asia (give birth to relatively undeveloped young) 
-                            * marsupials (?100mya in Utah) 65mya (young are carried in a pouch)+                            * **marsupials** (?100mya in Utah) 65mya (young are carried in a pouch)
                               * Laurasian possums => North America => South America (connected to Nth America until 65mya)                                * Laurasian possums => North America => South America (connected to Nth America until 65mya) 
                                 * Ameridelphia (American marsupials - oppossums)                                 * Ameridelphia (American marsupials - oppossums)
history/evolution.txt · Last modified: 2020/09/02 09:37 by gary1