diagnostic fossil造句

• She continued to dedicate herself to her work on diagnostic fossils even during her illness.
• Other diagnostic fossils were also found during this effort in the same limestone outcrop, including conifers and bivalves.
• It have features of the mosasauroids, with three vertebrae with haemal arches and procoelic centra, that suggest the possibility that these small bones belong to an embryo of this species, although the lack of diagnostic fossils like the skull or teeth prevents a complete identification.
• The "'Radiolaria "', also called "'Radiozoa "', are protozoa of diameter 0.1 0.2 mm that produce intricate mineral skeletons, typically with a central capsule dividing the diagnostic fossil found from the Cambrian onwards.