zh
下载

Prehistoric Life

Pikaia gracilens曾经有多长？

成年Pikaia gracilens总长约 5 cm (1.97 in)。

测量内容：Typical adult, total body length

Pikaia gracilens（5 cm）与a large coin（2.4 cm）和a smartphone（14.7 cm）按真实比例并排绘制
按比例绘制，从左到右依次是：Large coin (2.4 cm)、Pikaia gracilens (5 cm)和Smartphone (14.7 cm)。

比较

它实际有多大？

  • About 58% of the length of a credit card
  • About 2.1× the width of a large coin
  • As long as about 7 grains of rice end to end
  • About 2 would fit end to end along a smartphone
  • About 13% of the height of a bowling pin

了解更多

关于Pikaia gracilens的资料

Pikaia was a small Cambrian animal with a notochord, a flexible supporting structure related to the backbone of vertebrates.

来源：Royal Ontario Museum — Pikaia; Smithsonian National Museum of Natural History — Pikaia

Prehistoric Life

名称尺寸与Pikaia gracilens对比
Elrathia kingi2 cm (0.79 in)0.4×
Marrella splendens2.5 cm (0.98 in)0.5×
Eldredgeops rana5 cm (1.97 in)尺寸相同
Pikaia gracilens5 cm (1.97 in)本页面
Titanomyrma giganteum5 cm (1.97 in)尺寸相同
Tribrachidium heraldicum5 cm (1.97 in)尺寸相同
Cooksonia pertoni6.5 cm (2.56 in)1.3×
Ottoia prolifica8 cm (3.15 in)1.6×
Olenoides serratus10 cm (3.94 in)2×
Dickinsonia costata14 cm (5.51 in)2.8×

测测你的尺度感

哪个更大：Pikaia gracilens还是Cooksonia pertoni？

主题

更多相近尺寸