calpionellids
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| * considered by Armstrong and Brasier (2005) to be related to the ciliated (possessing tiny fronds which beat in waves used for locomotion and food-gathering) Tintinnids which are in turn considered to be protozoa (animals) | * considered by Armstrong and Brasier (2005) to be related to the ciliated (possessing tiny fronds which beat in waves used for locomotion and food-gathering) Tintinnids which are in turn considered to be protozoa (animals) | ||
| - | * hyaline calcareous wall (true tintinnids have organic walls), generally flask shaped | + | * hyaline calcareous wall (true tintinnids have organic walls and are discussed herein among the palynomorphs), generally flask shaped |
| * seldom recorded as loose specimens as they are very fragile – they are normally observed in thin-section | * seldom recorded as loose specimens as they are very fragile – they are normally observed in thin-section | ||
| - | * geologic range: Late Tithonian – Early Valanginian | + | * geologic range: Late Tithonian |
| * biostratigraphically significant in the Early Cretaceous and Late Jurassic but with very few practicing specialists however relatively low numbers of species ensure that general microfossil workers can usually identify them | * biostratigraphically significant in the Early Cretaceous and Late Jurassic but with very few practicing specialists however relatively low numbers of species ensure that general microfossil workers can usually identify them | ||
calpionellids.1679221308.txt.gz · Last modified: 19/03/2023 10:21 by mike_gss