Sgerbwd Ichthyosauria

Opsiwn Cynulliad Ffrâm Dur

Ffrâm Dur 1. Allanol (mantais: cost isel, cydosod hawdd)

2.Inner Steel Frame(advantage: good looking)

Cysylltwch â ni i ddysgu mwy y gallwn ei wneud.

Llif Gwaith

Clay Shape→Make Mold→Model Polish→Parts Arrangement→Skeleton Adjustment→Model Assembly→Final Painting

Gwydnwch

1.Temperature: adapt to a temperature of -20 degree  C to 40  degree  C.

2.Weather: resist rain, sunspot, snow, storm, etc extreme weather.

3.Environment: dan do ac awyr agored.

Deinosor

Gwyddoniadur

Ichthyosauria (Latin scientific name: Ichthyosauria, from Greek) ιχθυς, "Fish" and σ υρος "Lizard") is a large marine reptile similar to fish and dolphins. They lived in most of the Mesozoic era and first appeared about 250 million years ago, a little earlier than dinosaurs (230 million years ago). They disappeared about 90 million years ago and 25 million years earlier than dinosaurs. Some ichthyosaurs were very small, but others were very big.

Yn y Triasig Canol, dychwelodd yr ymlusgiaid daearol nad ydynt wedi'u pennu heddiw i'r môr yn raddol ac esblygodd yn ichthyosoriaid, proses debyg i esblygiad dolffiniaid a morfilod. Roeddent yn arbennig o gyffredin yn y Jwrasig. Yn y Cretasaidd, cawsant eu disodli gan plesiosaurs fel yr ysglyfaethwyr dyfrol uchaf.