HIGHER CLASSIFICATION OF CALCAREOUS NANNOFOSSILS
Part 2, Family level overview
Jeremy R. Young, Palaeontology Dept., NHM, Cromwell Road, London,
SW7 5BD, UK &
Paul R. Bown, Dept. of Geological Sciences, UCL, Gower Street, London,
WC1E 6BT, UK
The original version of this ms was printed in the Journal of Nannoplankton
Research, issue 19/1
CONTENTS
NANNOFOSSIL HIGHER CLASSIFICATION (Young & Bown 1997)
1. INTRODUCTION
2. FAMILY LEVEL OVERVIEW
(THIS PAGE)
3. REFERENCES
MESOZOIC (Bown & Young 1997)
1. HETEROCOCCOLITHS
2. HOLOCOCCOLITHS
3. NANNOLITHS
CENOZOIC (Young & Bown 1997)
1. HETEROCOCCOLITHS
2. HOLOCOCCOLITHS
3. NANNOLITHS
CONVENTIONS: As explained in the introduction we have found it useful
to supplement the formal classification with informal groupings of the various
taxa, these informal groupings (which have no phylogenetic significance)
are written in green text here.
MESOZOIC
NANNOPLANKTON
1. HETEROCOCCOLITHS
1.1. Murolith coccoliths
1.1a. Imbricating muroliths (loxoliths)
- Order EIFFELLITHALES Rood, Hay & Barnard, 1971
- Family CHIASTOZYGACEAE Rood, Hay & Barnard, 1973 emend.
Varol & Girgis, 1994
- Family EIFFELLITHACEAE Reinhardt, 1965
- Family RHAGODISCACEAE
1.1b. Non-imbricating muroliths (protoliths)
- Order STEPHANOLITHIALES Bown & Young ord. nov.
- ?Family CALCIOSOLENIACEAE Kamptner, 1927
- Family PARHABDOLITHACEAE Bown, 1987
- Family STEPHANOLITHIACEAE Black, 1968
1.2. Placolith coccoliths
1.2a. Non-imbricating (or radial) placoliths
and related taxa
- Order PODORHABDALES Rood et al., 1971 emend. Bown, 1987
- Family AXOPODORHABDACEAE Bown & Young fam. nov.
- Family BISCUTACEAE Black, 1971
- Family CALYCULACEAE Noel, 1973
- Family PREDISCOSPHAERACEAE Rood, Hay & Barnard, 1971
- ?Family CRETARHABDACEAE Thierstein, 1973
- Family MAZAGANELLACEAE Bown, 1987
- Family TUBODISCACEAE Bown & Rutledge 1997.
1.2b. Imbricating placoliths (R-unit dominated)
- Order WATZNAUERIALES Bown, 1987
- Family WATZNAUERIACEAE Rood, Hay & Barnard, 1971
1.2c. Other placolith-like groups
- Order ARKHANGELSKIALES Bown & Hampton 1997
- Family ARKHANGELSKIELLACEAE Bukry, 1969 emend. Bown & Hampton
- Family KAMPTNERIACEAE Bown & Hampton 1997
1.3. Heterococcoliths of uncertain affinities
1.3a. Muroliths
1.3b. Placoliths
2. HOLOCOCCOLITHS
- Family CALYPTROSPHAERACEAE Boudreaux & Hay, 1969
3. NANNOLITHS
- Family BRAARUDOSPHAERACEAE Deflandre, 1947
- Family EOCONUSPHAERACEAE Kristan-Tollmann, 1988
- Family GONIOLITHACEAE Deflandre, 1957
- Family LAPIDEACASSACEAE Bown & Young fam. nov.
- Family MICRORHABDULACEAE Deflandre, 1963
- Family NANNOCONACEAE Deflandre, 1959
- Family POLYCYCLOLITHACEAE Forchheimer, 1972 emend. Varol, 1992
- Family SCHIZOSPHAERELLACEAE Deflandre, 1959
- Genera incertae sedis
CENOZOIC NANNOPLANKTON
1. HETEROCOCCOLITHS
1.1. Murolith heterococcoliths
1.1a. Imbricating muroliths (loxoliths)
- Order EIFFELLITHALES Rood, Hay & Barnard, 1971
- Family CHIASTOZYGACEAE Rood, Hay & Barnard, 1973 emend.
Varol & Girgis, 1994
- Order ZYGODISCALES Young & Bown ord. nov.
- Family HELICOSPHAERACEAE Black, 1971
- Family PONTOSPHAERACEAE Lemmermann, 1908
- Family ZYGODISCACEAE Hay & Mohler, 1967
1.1b. Other muroliths and planoliths
- Order STEPHANOLITHIALES Bown & Young ord. nov.
- Family CALCIOSOLENIACEAE Kamptner, 1927
- Order SYRACOSPHAERALES Ostenfeld, 1899
- Family SYRACOSPHAERACEAE Hay, 1977
- Order RHABDOSPHAERALES Ostenfeld, 1899
- Family RHABDOSPHAERACEAE Lemmermann, 1908
1.2. Placolith heterococcoliths
- Order PRINSIALES Young & Bown ord. nov.
- Family PRINSIACEAE Hay & Mohler, 1967 emend. (V-unit prominent)
- Family NOELAERHABDACEAE Jerkovic, 1970 emend. (V-unit
vestigial)
- Order COCCOSPHAERALES Haeckel, 1894 emend.
- Family COCCOLITHACEAE Poche, 1913 emend.
- Family CALCIDISCACEAE Young & Bown fam. nov. ( Calcidiscus-type
rim)
- Family PLEUROCHRYSIDACEAE Fresnel & Billard, 1991
- Order WATZNAUERIALES Bown, 1987
- Family WATZNAUERIACEAE Rood, Hay & Barnard, 1971
1.3. Heterococcoliths of uncertain affinities
- Family HYMENOMONADACEAE Senn, 1900
- Family PAPPOSPHAERACEAE Jordan & Young, 1990
- Genera incertae sedis
2. HOLOCOCCOLITHS
- Family CALYPTROSPHAERACEAE Boudreaux & Hay, 1969
3. NANNOLITHS
3a. Nannoliths consisting of several crystal
units and showing radial symmetry
- Family BRAARUDOSPHAERACEAE Deflandre, 1947
- Family GONIOLITHACEAE Deflandre, 1957
- Family LAPIDEACASSACEAE Bown & Young fam. nov.
- Genera incertae sedis
- Order DISCOASTERALES Hay, 1977
- Family DISCOASTERACEAE Tan, 1927
- Family FASCICULITHACEAE Hay & Mohler, 1967
- Family HELIOLITHACEAE Hay & Mohler, 1967
- Family SPHENOLITHACEAE Deflandre, 1952
3b. Nannoliths consisting of a single crystal-unit,
showing radial symmetry
- Family LITHOSTROMATIONACEAE Deflandre, 1959
- Genera incertae sedis
3c. Nannoliths consisting of a single crystal
unit, and lacking radial symmetry
- Family CERATOLITHACEAE Norris, 1965
- Family TRIQUETRORHABDULACEAE Lipps, 1969
- Genera incertae sedis
Return to: top; Introduction,
family-level overview, Mesozoic heterococcoliths,
holococcoliths & nannoliths; Cenozoic
heterococcoliths, holococcoliths
& nannoliths
This page was produced by Jeremy
Young, feedback and corrections welcome.
