macroconch造句

例句与造句

1. The specimen was within the sedimentary infill of a mature macroconch.
2. That of the macroconch is generally simple, preceded by a constriction.
3. In most aspects the microconch is simply a smaller version of the macroconch.
4. The aperture of the macroconch has a broad ventral collar preceded by a constriction.
5. Microconch and macroconch variations, presumed male and female respectively, also differ in their apertures.
6. It's difficult to find macroconch in a sentence. 用macroconch造句挺难的
7. These specimens have been used to support the contention that macroconch ammonite shells were those of females.
8. The aperture of macroconch " Duashnoceras " is simple, a constriction followed by an elevated lip.
9. The macroconch and microconch of one species were often previously mistaken for two closely related but different species occurring in the same rocks.
10. This species is characterized by sexual dimorphism, with macroconch ( large shell ) in females and microconch ( small shell ) in males.
11. Like many ammonites, " Stephanoceras " is dimorphic with a large, macroconch, form thought to be female and a small, microconch, form thought to be male.
12. This sexual dimorphism is thought to be an explanation for the variation in size of certain ammonite shells of the same species, the larger shell ( the "'macroconch "') being female, and the smaller shell ( the "'microconch "') being male.