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| == Carnegie Stage Table ==
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| The embryos shown in the table below are currently not from the Carnegie collection.
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| {| border="0"
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| |-bgcolor="CEDFF2"
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| | width="40" |<center>'''Stage'''</center>
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| | width="65" |<center>'''Days''' (approx)</center>
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| | width="101" |<center>'''Size'''</center> <center>(mm)</center>
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| | width="100" |<center>'''Images<br />'''(not to scale)</center>
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| | width="400" |<center>'''Events'''</center>
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| |-
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| | width="40" |<center>[[Carnegie_stage_1|'''1''']]</center>
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| | width="65" |<center> 1 </center>([[week 1|'''week 1''']])
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| | width="101" |<center>0.1 - 0.15</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Human_zygote_two_pronuclei_02.jpg|60px|Link=Carnegie_stage_1]]</center>
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| | width="400" | fertilized oocyte, [[zygote]], pronuclei
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_2|'''2''']]</center>
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| | width="65" |<center> 2 - 3</center>
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| | width="101" |<center>0.1 - 0.2</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Human_embryo_day_3.jpg|60px|Link=Carnegie_stage_2]]</center>
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| | width="400" | [[morula]] cell division with reduction in cytoplasmic volume, [[blastocyst]] formation of inner and outer cell mass
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| |-
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| | width="40" |<center>[[Carnegie_stage_3|'''3''']]</center>
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| | width="65" |<center> 4 - 5</center>
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| | width="101" |<center>0.1 - 0.2</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Human_embryo_day_5.jpg|60px|Link=Carnegie_stage_3]]</center>
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| | width="400" | loss of zona pellucida, free [[blastocyst]]
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_4|'''4''']]</center>
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| | width="65" |<center> 5 - 6</center>
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| | width="101" |<center>0.1 - 0.2</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Week2_001_icon.jpg|60px|Link=Carnegie_stage_4]]</center>
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| | width="400" | attaching [[blastocyst]]
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| |-
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| | width="40" |<center>[[Carnegie_stage_5|'''5''']]</center>
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| | width="65" |<center> 7 - 12<br /> ([[week 2|'''week 2''']])</center>
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| | width="101" |<center> 0.1 - 0.2</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Chorion_001_icon.jpg|60px|Link=Carnegie_stage_5]]</center>
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| | width="400" | [[implantation]]
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_6|'''6''']]</center>
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| | width="65" |<center> 13 - 15</center>
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| | width="101" |<center> 0.2</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Human_embryo_16-18_days_02.jpg|60px|Link=Carnegie_stage_6]]</center>
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| | width="400" | extraembryonic mesoderm, primitive streak, [[gastrulation]]
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| |-
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| | width="40" |<center>[[Carnegie_stage_7|'''7''']]</center>
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| | width="65" |<center> 15 - 17 </center><center>([[week 3|'''week 3''']])</center>
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| | width="101" |<center> 0.4</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage7_features.jpg|60px|Link=Carnegie_stage_7]]</center>
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| | width="400" | [[gastrulation]], [[notochord|notochordal process]]
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_8|'''8''']]</center>
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| | width="65" |<center> 17 - 19</center>
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| | width="101" |<center> 1.0 - 1.5</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage8_bf4.jpg|60px|Link=Carnegie_stage_8]]</center>
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| | width="400" |primitive pit, notochordal canal
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| |-
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| | width="40" |<center>[[Carnegie_stage_9|'''9''']]</center>
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| | width="65" |<center> 19 - 21</center>
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| | width="101" |<center> 1.5 - 2.5</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage9_dorsal.jpg|60px|Link=Carnegie_stage_9]]</center>
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| | width="400" |[[Somitogenesis]] '''Somite Number 1 - 3''' neural folds, cardiac primordium, head fold
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_10|'''10''']]</center>
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| | width="65" |<center> 22 - 23 </center><center>([[week 4|'''week 4''']])</center>
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| | width="101" |<center> 2 - 3.5</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage10_bf4b.jpg|60px|Link=Carnegie_stage_10]]</center>
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| | width="400" |'''Somite Number 4 - 12''' neural fold fuses
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| |-
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| | width="40" |<center>[[Carnegie_stage_11|'''11''']]</center>
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| | width="65" |<center> 23 - 26</center>
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| | width="101" |<center> 2.5 - 4.5</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage11 bf7b.jpg|60px|Link=Carnegie_stage_11]]</center>
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| | width="400" |'''Somite Number 13 - 20''' rostral neuropore closes
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_12|'''12''']]</center>
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| | width="65" |<center> 26 - 30</center>
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| | width="101" |<center> 3 - 5</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage12 bf5b.jpg|60px|Link=Carnegie_stage_12]]</center>
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| | width="400" |'''Somite Number 21 - 29''' caudal neuropore closes
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| |-
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| | width="40" |<center>[[Carnegie_stage_13|'''13''']]</center>
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| | width="65" |<center> 28 - 32 </center>([[week 5|'''week 5''']])
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| | width="101" |<center> 4 - 6</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage13 bf2c.jpg|60px|Link=Carnegie_stage_13]]</center>
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| | width="400" |'''Somite Number 30''' leg buds, lens placode, pharyngeal arches
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| |- bgcolor="#CCFFCC"
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| | colspan="5" width="376" height="18" |<center> [[Carnegie_stage_13_-_serial_sections|Stage 13/14 shown in serial embryo sections]] series of Embryology Program</center>
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_14|'''14''']]</center>
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| | width="65" |<center> 31 - 35</center>
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| | width="101" |<center> 5 - 7</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage14_bf2c.jpg|60px|Link=Carnegie_stage_14]]</center>
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| | width="400" |lens pit, optic cup
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| |-
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| | width="40" |<center>[[Carnegie_stage_15|'''15''']]</center>
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| | width="65" |<center> 35 - 38</center>
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| | width="101" |<center> 7 - 9</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage15 bf1c.jpg|60px|Link=Carnegie_stage_15]]</center>
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| | width="400" |lens vesicle, nasal pit, hand plate
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_16|'''16''']]</center>
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| | width="65" |<center> 37 - 42 </center>([[week 6|'''week 6''']])
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| | width="101" |<center> 8 - 11</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage16 bf1c.jpg|60px|Link=Carnegie_stage_16]]</center>
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| | width="400" |nasal pits moved ventrally, auricular hillocks, foot plate
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| | width="40" |<center>[[Carnegie_stage_17|'''17''']]</center>
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| | width="65" |<center> 42 - 44</center>
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| | width="101" |<center> 11 - 14</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage17 bf1c.jpg|60px|Link=Carnegie_stage_17]]</center>
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| | width="400" |finger rays
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_18|'''18''']]</center>
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| | width="65" |<center> 44 - 48 </center>([[week 7|'''week 7''']])
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| | width="101" |<center> 13 - 17</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage18 bf1c.jpg|60px|Link=Carnegie_stage_18]]</center>
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| | width="400" |ossification commences
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| |-
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| | width="40" |<center>[[Carnegie_stage_19|'''19''']]</center>
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| | width="65" |<center> 48 - 51</center>
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| | width="101" |<center> 16 - 18</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage19 bf1c.jpg|60px|Link=Carnegie_stage_19]]</center>
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| | width="400" |straightening of trunk
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_20|'''20''']]</center>
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| | width="65" |<center> 51 - 53 </center>([[week 8|'''week 8''']])
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| | width="101" |<center> 18 - 22</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage20 bf1c.jpg|60px|Link=Carnegie_stage_20]]</center>
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| | width="400" |upper limbs longer and bent at elbow
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| |-
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| | width="40" |<center>[[Carnegie_stage_21|'''21''']]</center>
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| | width="65" |<center>53 - 54</center>
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| | width="101" |<center>22 - 24</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage21 bf1c.jpg|60px|Link=Carnegie_stage_21]]</center>
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| | width="400" |hands and feet turned inward
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| |- bgcolor="#FFCCCC"
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| | colspan="5" width="376" |<center> [[Carnegie_stage_22_-_serial_sections|Stage 22 shown in serial embryo sections series]] of Embryology Program</center>
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| |-bgcolor="F5FAFF"
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| | width="40" |<center>[[Carnegie_stage_22|'''22''']]</center>
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| | width="65" |<center> 54 - 56</center>
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| | width="101" |<center> 23 - 28</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage22 bf1c.jpg|60px|Link=Carnegie_stage_22]]</center>
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| | width="400" |eyelids, external ears
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| |-
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| | width="40" |<center>[[Carnegie_stage_23|'''23''']]</center>
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| | width="65" |<center> 56 - 60</center>
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| | width="101" |<center>27 - 31</center>
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| | width="100" bgcolor="#000000" |<center>[[File:Stage23 bf1c.jpg|60px|Link=Carnegie_stage_23]]</center>
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| | width="400" |rounded head, body and limbs
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| |-bgcolor="F5FAFF"
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| | colspan="5" width="376" |<center>Following this stage [[Fetal Development]] occurs until birth (approx 40 weeks)</center>
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| |}
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