What Are the Nuchal Lines?
Intersection of adjacent spiral rings.
Umbilical cord
Right!
- Chinese name
- Umbilical cord
- Foreign name
- umbilicalseam
- Applied discipline
- Paleontology; paleontology
- Definition
- Intersection of adjacent spiral rings
- Intersection of adjacent spiral rings.
- Chinese name: Umbilical cord ; English name: umbilicalseam; Definition 1: Intersection of adjacent spiral rings. Applied disciplines: paleontology (first-level discipline); paleontology (secondary discipline); molluscs ...