Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria

Richard W. Jordan; Kent Abe; Jarret Cruz; Ruth Eriksen; Catarina Guerreiro; Kyoko Hagino; Mikal Heldal; David U.  Hernández-Becerril; Elisa Malinverno; Shiro Nishida; Shramik M.  Patil; Luka Šupraha; Helge Abildhauge Thomsen; Maria V.  Triantaphyllou; Jeremy R. Young

Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria

Richard W. Jordan, Kent Abe, Jarret Cruz, Ruth Eriksen, Catarina Guerreiro, Kyoko Hagino, Mikal Heldal, David U. Hernández-Becerril, Elisa Malinverno, Shiro Nishida, Shramik M. Patil, Luka Šupraha, Helge Abildhauge Thomsen, Maria V. Triantaphyllou, Jeremy R. Young

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Abstract

Scale-bearing siliceous nannoplankton are occasionally encountered in surface seawater samples, but are rarely identified or illustrated. In this study, the morphological diversity of the haptophyte Hyalolithus neolepis and the enigmatic Petasaria heterolepis are investigated in scanning and transmission electron microscopes using materials from around theworld. Results show that H. neolepis
scales exhibit variation in the width of the marginal hyaline area, but intermediate specimens make separation of the two morphologies
difficult. Petasaria heterolepis scales also show differences, in the presence of tubercle rows in the hyaline area and degree of hyaline areal coverage, but separation into discrete varieties is difficult at present. However, specimens with scales bearing a protuberance are considered to be distinct enough to warrant the erection of a new species, Petasaria protuberans Jordan,Malinverno, Šupraha, Thomsen et Young sp. nov.

Original language	English
Journal	Micropaleontology
Volume	61
Issue number	6
Pages (from-to)	439-455
ISSN	0026-2803
Publication status	Published - 2016

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Jordan, R. W., Abe, K., Cruz, J., Eriksen, R., Guerreiro, C., Hagino, K., Heldal, M., Hernández-Becerril, D. U., Malinverno, E., Nishida, S., Patil, S. M., Šupraha, L., Thomsen, H. A., Triantaphyllou, M. V., & Young, J. R. (2016). Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria. Micropaleontology, 61(6), 439-455. http://www.micropress.org/microaccess/micropaleontology

@article{1c312ae54cac46958e631610ea419bda,

title = "Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria",

abstract = "Scale-bearing siliceous nannoplankton are occasionally encountered in surface seawater samples, but are rarely identified or illustrated. In this study, the morphological diversity of the haptophyte Hyalolithus neolepis and the enigmatic Petasaria heterolepis are investigated in scanning and transmission electron microscopes using materials from around theworld. Results show that H. neolepisscales exhibit variation in the width of the marginal hyaline area, but intermediate specimens make separation of the two morphologiesdifficult. Petasaria heterolepis scales also show differences, in the presence of tubercle rows in the hyaline area and degree of hyaline areal coverage, but separation into discrete varieties is difficult at present. However, specimens with scales bearing a protuberance are considered to be distinct enough to warrant the erection of a new species, Petasaria protuberans Jordan,Malinverno, {\v S}upraha, Thomsen et Young sp. nov.",

author = "Jordan, {Richard W.} and Kent Abe and Jarret Cruz and Ruth Eriksen and Catarina Guerreiro and Kyoko Hagino and Mikal Heldal and Hern{\'a}ndez-Becerril, {David U.} and Elisa Malinverno and Shiro Nishida and Patil, {Shramik M.} and Luka {\v S}upraha and Thomsen, {Helge Abildhauge} and Triantaphyllou, {Maria V.} and Young, {Jeremy R.}",

year = "2016",

language = "English",

volume = "61",

pages = "439--455",

journal = "Micropaleontology",

issn = "0026-2803",

publisher = "American Museum of Natural History",

number = "6",

}

Jordan, RW, Abe, K, Cruz, J, Eriksen, R, Guerreiro, C, Hagino, K, Heldal, M, Hernández-Becerril, DU, Malinverno, E, Nishida, S, Patil, SM, Šupraha, L, Thomsen, HA, Triantaphyllou, MV & Young, JR 2016, 'Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria', Micropaleontology, vol. 61, no. 6, pp. 439-455. <http://www.micropress.org/microaccess/micropaleontology>

TY - JOUR

T1 - Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria

AU - Jordan, Richard W.

AU - Abe, Kent

AU - Cruz, Jarret

AU - Eriksen, Ruth

AU - Guerreiro, Catarina

AU - Hagino, Kyoko

AU - Heldal, Mikal

AU - Hernández-Becerril, David U.

AU - Malinverno, Elisa

AU - Nishida, Shiro

AU - Patil, Shramik M.

AU - Šupraha, Luka

AU - Thomsen, Helge Abildhauge

AU - Triantaphyllou, Maria V.

AU - Young, Jeremy R.

PY - 2016

Y1 - 2016

N2 - Scale-bearing siliceous nannoplankton are occasionally encountered in surface seawater samples, but are rarely identified or illustrated. In this study, the morphological diversity of the haptophyte Hyalolithus neolepis and the enigmatic Petasaria heterolepis are investigated in scanning and transmission electron microscopes using materials from around theworld. Results show that H. neolepisscales exhibit variation in the width of the marginal hyaline area, but intermediate specimens make separation of the two morphologiesdifficult. Petasaria heterolepis scales also show differences, in the presence of tubercle rows in the hyaline area and degree of hyaline areal coverage, but separation into discrete varieties is difficult at present. However, specimens with scales bearing a protuberance are considered to be distinct enough to warrant the erection of a new species, Petasaria protuberans Jordan,Malinverno, Šupraha, Thomsen et Young sp. nov.

AB - Scale-bearing siliceous nannoplankton are occasionally encountered in surface seawater samples, but are rarely identified or illustrated. In this study, the morphological diversity of the haptophyte Hyalolithus neolepis and the enigmatic Petasaria heterolepis are investigated in scanning and transmission electron microscopes using materials from around theworld. Results show that H. neolepisscales exhibit variation in the width of the marginal hyaline area, but intermediate specimens make separation of the two morphologiesdifficult. Petasaria heterolepis scales also show differences, in the presence of tubercle rows in the hyaline area and degree of hyaline areal coverage, but separation into discrete varieties is difficult at present. However, specimens with scales bearing a protuberance are considered to be distinct enough to warrant the erection of a new species, Petasaria protuberans Jordan,Malinverno, Šupraha, Thomsen et Young sp. nov.

M3 - Journal article

SN - 0026-2803

VL - 61

SP - 439

EP - 455

JO - Micropaleontology

JF - Micropaleontology

IS - 6

ER -

Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria

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