154,548 species and infraspecific names are in the database, 21,106 images, 59,782 bibliographic items, 419,596 distributional records.

Pyrophacus horologium F.Stein

Empire Eukaryota
Kingdom Chromista
Subkingdom Harosa (supergroup SAR)
Infrakingdom Halvaria
Phylum Miozoa
Subphylum Myzozoa
Infraphylum Dinozoa
Superclass Dinoflagellata
Class Dinophyceae
Order Gonyaulacales
Family Pyrophacaceae
Genus Pyrophacus


Publication details
Pyrophacus horologium F.Stein 1883: 28, pl. XXIV [24]; pl. XXV [25]: fig. 1

Published in: Stein, F. (1883). Die naturgeschichte der arthrodelen Flagellaten. In: Der Organismus der Infusionstiere. III. Pt. 2. ( Eds), pp. 1-30. Leipzig:

Type species
This is the type species (holotype) of the genus Pyrophacus.

Status of name
This name is of an entity that is currently accepted taxonomically.

Origin of species name
Noun (Latin), clock (Stearn 1973).

No synonyms are currently included in AlgaeBase.

Nomenclatural notes
Stein 1883: 7, 28, pl. XXIV; pl. XXV: fig. 1 (INA). Stein 1883: 28, pl. 28 [24?], figs 6-13 (Dodge, 1982). "horologium" is a noun in apposition and retains its gender; often incorrectly rendered "horologicum" an adjective. - (29 May 2014) - Wendy Guiry

Taxonomic notes
Polyphacus horologium Stein 1883 emend. Wall & Dale 1971: 234; synonym: P. horologium Stein 1883: 28, pl. 24, fig, 6-13; lectotype: specimen figured by Stein 1883, pl. 24, fig. 7. - (3 Jun 2014) - Wendy Guiry

Distributional notes
Oceanic, neritic, estuarine; cosmopolitan in cold temperate to tropical waters (Steidinger & Tangen (996). - (3 Jun 2014) - Wendy Guiry

General environment
This is a marine species.

emend. Wall & Dale (1971: 234).

Type information
Type locality: Nordsee, Mittelmeer, Südsee (Silva 1996-to date). Lectotype: Speciemen figured by Stein 1883, Pl. 24, fig. 7: (Wall & Dale 1971: 234).

Detailed distribution with sources (Click to Load)

Key references
Dodge, J.D. (1982). Marine dinoflagellates of the British Isles. pp. 1-303, 35 figs, pls I-VIII. London: Her Majesty's Stationery Office.

Krakhmalny, A.F. [Krachmalny, A.F.] (2011). Dinophyta of Ukraine (illustrated book for identification). Ed by P.M.Tsarenko. pp. [1]-442, 32 figs, 117 pls. Kiev: Alterpres. [in Russian]

Pankow, H. (1976). Algenflora der Ostsee. II. Plankton (einschliesslich benthischer Kieselalgen). pp. 1-493, 880 figs, 26 pls. Jena: Gustav Fischer.

Schiller, J. (1935). Dinoflagellatae (Peridineae). In: Dr. L. Rabenhosrst's Kryptogamen-Flora von Deutschland, Österreich und der Schweiz, 2. Aufl. X. Band, 3. Abt. 2 Teil. ( Eds), pp. 1-320. Leipzig: Akademische Verlagsgesellschaft M.B.H..

Sournia, A. (1986). Atlas du phytoplancton marin. Volume I: Cyanophycées, Dictyophycées, Dinophycées, Raphidophycées. pp. [1]-219. Paris: Éditions du Centre National de la Recherche Scientifique 15, quai Anatole France - 75700 Paris.

Steidinger, K.A. & Tangen, K. (1996). Dinoflagellates. In: Identifying Marine Phytoplankton. (Tomas, C.R. Eds), pp. 387-584. San Diego: Academic Press.

Wall, D. & Dale, B. (1971). A reconsideration of living and fossil Pyrophacus Stein, 1883 (Dinophyceae). Journal of Phycology 7(3): 221-235, 40 figs, 2 tables.

Created: 01 July 2005 by Sandy Lawson

Verified by: 07 December 2018 by M.D. Guiry

Accesses: This record has been accessed by users 1777 times since it was created.

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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=71331

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 February 2019.

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