A New Species of Carbonicola from near the Base of the Namurian in Ayrshire

AbstractThe marine Johnstone Shell Bed, an important index horizon in the Limestone Coal Group of the Carboniferous of Scotland, is succeeded in North Ayrshire by a bed containing Lingula squamiformis Phillips, and many small shells here referred to a new species of the genus Carbonicola. This Carbonicola community has been examined in detail, and graphical representation of the great variability has been employed.

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New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada

Canadian Journal of Earth Sciences ◽

10.1139/e10-073 ◽

2010 ◽

Vol 47 (12) ◽

pp. 1445-1449 ◽

Cited By ~ 2

Author(s):

Francine R. Abe ◽

Bruce S. Lieberman ◽

Michael C. Pope ◽

Kelly Dilliard

Keyword(s):

New Species ◽

Shallow Water ◽

Great Variability ◽

Early Cambrian ◽

New Information ◽

Biostratigraphic Correlation ◽

Low Diversity ◽

Peritidal Facies ◽

Mackenzie Mountains ◽

A New Species

A new species of olenelline trilobite, Nevadella keelensis , is described from the Early Cambrian (Cambrian Series 2, Stage 3) in the Sekwi Formation, Mackenzie Mountains, Canada. The difficulty in discerning between Nevadia Walcott, 1910 and Nevadella Raw, 1936 is discussed, and a revision of the two genera is suggested, particularly with the addition of Nevadella keelensis n. sp. A holmiid trilobite, perhaps conspecific with Esmeraldina rowei (Walcott, 1910), was also confirmed from the same locality. The E. sp. aff. rowei represents the narrow form of a species known for great variability in cephalic form. The trilobite material comes from a low diversity, shallow water, peritidal facies that was not sampled in previous studies of Cambrian fossils in the area, and could prove useful in facilitating biostratigraphic correlation across the Selwyn Basin and with other parts of Laurentia as well.

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Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima, Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea, Eucalliacidae)

Zootaxa ◽

10.11646/zootaxa.4878.3.5 ◽

2020 ◽

Vol 4878 (3) ◽

pp. 523-541

Author(s):

YUSUKE ANDO ◽

SHIGENORI KAWANO ◽

YUSUKE MURAMIYA ◽

SOTA NIIYAMA ◽

SOHIKO KAMEYAMA ◽

...

Keyword(s):

New Species ◽

Decapod Crustaceans ◽

Ghost Shrimp ◽

Reducing Environment ◽

Shell Bed ◽

A New Species

Five species of decapod crustaceans, including Calliax nishiki sp. nov. (Axiidea, Eucalliacidae) and Carcinoplax longimana (de Haan), are described from the upper part of the Moeshima Silt Bed (latest Pleistocene to Holocene: ca 13,000 to 8,000 cal BP). Ten decapods, including Laticallichirus grandis (Karasawa & Goda) and Ebalia tuberculosa (A. Milne-Edwards) are described from the Moeshima Shell Bed (Holocene: ca 8,000 to 2,000 cal BP). Calliax nishiki is abundant and Carcinoplax longimana is common in the decapod assemblage of Moeshima Silt Bed. The new species of Calliax seems to have dispersed around the deep marine setting with a reducing environment. The decapod assemblage of the Moeshima Shell Bed is characterized by a predominance of L. grandis. The present record suggests that L. grandis is abundant under sandy and gravelly bottoms mixed with shells of the lower sublittoral to subtidal zones during the Quaternary.

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