Nannotax3 - ntax_cenozoic - Gephyrocapsa ericsonii

Gephyrocapsa ericsonii

Classification: ntax_cenozoic -> Isochrysidales -> Noelaerhabdaceae -> Gephyrocapsa -> Gephyrocapsa ericsonii
Sister taxa: G. oceanica, G. muellerae, G. ornata, G. ericsonii, G. sp elevated bridge ⟩⟨ G. caribbeanica, G. omega, G. lumina, G. small, G. sp.

Okada & McI 1977 pl2 09b.jpg

Daughter taxa (time control age-window is: 0-800Ma)
				Gephyrocapsa ericsonii ericsonii type distal shield without slits
				Gephyrocapsa ericsonii protohuxleyi type distal shield with slits between the elements
				Gephyrocapsa ericsonii protohuxleyi type with half bridge distal shield with slits between the elements and bridge only half-formed
				Gephyrocapsa ericsonii protohuxleyi type with thorn distal shield with slits between the elements and additional spine or spines
				Gephyrocapsa ericsonii crassipons type Well calcfied with robust & low profile bridge

Taxonomy:

Citation: Gephyrocapsa ericsonii (McIntyre & Bé, 1967)

Rank: Species

Basionym: Gephyrocapsa ericsonii McIntyre & Bé, 1967

Synonyms:

Gephyrocapsa undulatus Lecal 1967 [my interpretation - JRY 2016]
Gephyrocapsa protohuxleyi McIntyre 1970 - since the forms with and without slits appear to intergrade we regard them here as conspecific morphotypes and hence the species G. protohuxleyi is regarded as a synonym of G. ericsonii

Variants:

Gephyrocapsa crassipons Okada & McIntyre 1977 - like ericsonii but more heavily calcified and with broader bridge formed of several elements.
Specimens often show slits between distal shield elements. These morphotypes have sometimes been referred to a separate species, G. protohuxleyi (McIntyre 1970), but they intergrade with normal G. ericsonii. Typical fossil G. protohuxleyi is larger than these modern forms.

Taxonomic discussion: In the fossil record Gephyrocapsa specimens <3µm long are usually simply identified as "small Gephyrocapsa"

Distinguishing features: Very small species of Gephyrocapsa; bridge at high to intermediate angle to short axis; wide central area, thin bridge.

Farinacci & Howe catalog pages: G. ericsonii * , G. crassipons * , G. undulatus *

Size: Coccospheres, 3 to 5 µm; coccoliths, 1.4 to 2.3 µm long.

Cultures: strains of this species are maintained in culture, for details see Roscoff culture collection.

See also: Gephyrocapsa small ;

Search data:

Tags	LITHS: placolith, elliptical, CA: ca_conjunct, grill, bar, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
Metrics	Lith size: 1.5->2.3µm; Coccosphere size: 3->4µm; Liths per sphere: 12->21 Data source notes: RCC

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within Middle Pleistocene Sub-Epoch (0.13-0.78Ma, base in Ionian stage). Data source: [JRY rough estimate]

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Gephyrocapsa ericsonii, synonyms included - Gephyrocapsa ericsonia; Gephyrocapsa ericsonii;
See also space-time plot :: Samples map :: Parent: Gephyrocapsa

References:

Lecal, J. (1967). Le nannoplancton des Côtes d'Israel. Hydrobiologia. 29: 305-387. gs

McIntyre, A. & Bé, A. W. H. (1967b). Modern Coccolithophoridae of the Atlantic Ocean - I. Placoliths and Cyrtholiths. Deep-Sea Research and Oceanographic Abstracts. 14: 561-597. gs

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. gs

Gephyrocapsa ericsonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-4-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=606 Go to Archive.is to create a permanent copy of this page - citation notes

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