Chitinozoa

Conochitina emmastensis, copyright Valdek Mikli.

Belongs within: Eukaryota.

The Chitinozoa are a group of flask-shaped, organic-walled microfossils known from the mid-Palaeozoic. The affinities of chitinozoans are uncertain; it has been suggested that they may represent the eggs of invertebrates such as worms or mollusks rather than mature, independent organisms.

<==Chitinozoa
    |--Sphaerochitina Eisenack 1955 WBN02
    |--Lagenochitina Eisenack 1931 WBN02
    |--Spinachitina Schallreuter 1963 WBN02
    |--Angochitina longicollis Eisenack 1959 WBN02
    |--Calpichitina densa (Eisenack 1962) WBN02
    |--Margachitina margaritana (Eisenack 1937) WBN02
    |--Cyathochitina Eisenack 1955 WBN02
    |    `--C. campanulaeformis BU02
    |--Euconochitina WBN02
    |    |--E. alargada Cramer 1967 WBN02
    |    |--E. edjelensis (Taugourdeau 1963) WBN02
    |    `--E. elongata (Taugourdeau 1963) WBN02
    `--Conochitina WBN02
         |--C. emmastensis Nestor 1982 WBN02
         |--C. praeproboscifera Nestor 1994 WBN02
         |--C. proboscifera Eisenack 1937 WBN02
         `--C. tuba Eisenack 1932 WBN02

Nomina nuda: Conochitina malleus van Grootel 1990 WBN02

*Type species of generic name indicated

REFERENCES

[BU02] Bates, D. E. B., & A. Urbanek. 2002. The ultrastructure, development, and systematic position of the graptolite genus Mastigograptus. Acta Palaeontologica Polonica 47 (3): 445–458.

[WBN02] Won, M.-Z., R. B. Blodgett & V. Nestor. 2002. Llandoverian (Early Silurian) radiolarians from the Road River Formation of east-central Alaska and the new family Haplotaeniatumidae. Journal of Paleontology 76 (6): 941–964.