Abyssomelania cramptoni

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Kaim, Andrzej, Jenkins, Robert G., Tanabe, Kazushige, Kiel, Steffen (2014) Mollusks from late Mesozoic seep deposits, chiefly in California. Zootaxa 3861 : 414 – 416, doi. Versioned wiki page: 2017-01-19, version 127122, https://species-id.net/w/index.php?title=Abyssomelania_cramptoni&oldid=127122 , contributors (alphabetical order): PlaziBot.

Citation formats to copy and paste

BibTeX:

@article{Kaim2014Zootaxa3861,
author = {Kaim, Andrzej AND Jenkins, Robert G. AND Tanabe, Kazushige AND Kiel, Steffen},
journal = {Zootaxa},
title = {Mollusks from late Mesozoic seep deposits, chiefly in California},
year = {2014},
volume = {3861},
issue = {},
pages = {414 -- 416},
doi = {TODO},
url = {},
note = {Versioned wiki page: 2017-01-19, version 127122, https://species-id.net/w/index.php?title=Abyssomelania_cramptoni&oldid=127122 , contributors (alphabetical order): PlaziBot.}

}

RIS/ Endnote:

TY - JOUR
T1 - Mollusks from late Mesozoic seep deposits, chiefly in California
A1 - Kaim, Andrzej
A1 - Jenkins, Robert G.
A1 - Tanabe, Kazushige
A1 - Kiel, Steffen
Y1 - 2014
JF - Zootaxa
JA -
VL - 3861
IS -
UR - http://dx.doi.org/TODO
SP - 414
EP - 416
PB -
M1 - Versioned wiki page: 2017-01-19, version 127122, https://species-id.net/w/index.php?title=Abyssomelania_cramptoni&oldid=127122 , contributors (alphabetical order): PlaziBot.

M3 - doi:TODO

Wikipedia/ Citizendium:

<ref name="Kaim2014Zootaxa3861">{{Citation
| author = Kaim, Andrzej, Jenkins, Robert G., Tanabe, Kazushige, Kiel, Steffen
| title = Mollusks from late Mesozoic seep deposits, chiefly in California
| journal = Zootaxa
| year = 2014
| volume = 3861
| issue =
| pages = 414 -- 416
| pmid =
| publisher =
| doi = TODO
| url =
| pmc =
| accessdate = 2020-02-22

}} Versioned wiki page: 2017-01-19, version 127122, https://species-id.net/w/index.php?title=Abyssomelania_cramptoni&oldid=127122 , contributors (alphabetical order): PlaziBot.</ref>


Taxonavigation

Ordo: Archaeogastropoda
Familia: Melanodrymiidae
Genus: Abyssomelania

Name

Abyssomelania cramptoni Wikispecies linkPensoft Profile

  • Abyssomelania cramptoni Kaim, Andrzej, 2014, Zootaxa 3861: 414-416.

Materials Examined

Type locality and strata: Seep limestone from the south end of Waipiro Bay, North Island, New Zealand;. For Campanian (Late Cretaceous). For details see Kiel et al. (2013). Holotype: GNS TM 8852, four well-preserved adolescent whorls, 28.7 mm high and 12.8 mm wide. Paratypes: GNS TM 8850, - 51, - 53, well to moderately preserved adolescent shells; GNS TM 8927, juvenile shell. Additional material: 5 fragmentary specimens from the type locality.

Diagnosis

Diagnosis. Tall gastropods (reaching 30 mm in length) with smooth lateral flanks of the adolescent/adult shell and spirally ornamented base. The growth lines opisthocline with angulation in the upper part of the lateral flank. The largest diameter of the whorls in the lower part of the lateral flank.

Description

Description. Tall shell with largest whorl diameter slightly above abapical suture. Protoconch unknown. Juvenile teleoconch ornamented by opisthocline axial ribs and delicate striae. Axial ribs fading out in adolescent shell, adult shell surface smooth apart from opisthocline growth lines and abyssomelanid riblets appearing at the terminal (?) teleoconch whorl. Shell base ornamented by ten spiral ribs intersected by growth lines without knobs. Suture weakly incised. Aperture poorly preserved, D-shaped.

Discussion

Remarks. This species was preliminarily identified as “Abyssochrysoid gastropod” by Kiel et al. (2013) pending formal description. Together with A. campbellae n. sp. described below it forms a distinctive genus that inhabited ancient hydrocarbon seeps. Abyssomelania cramptoni is much smaller than A. campbellae and has weaker and more numerous spiral ribs on the base. The greatest diameter of the whorl is higher above the abapical suture giving more bulgy appearance than in A. campbellae. The growth lines of A. cramptoni are angulated in the upper part of the lateral flank while in A. campbellae the growth lines are angulated in the middle of the lateral flank.

Etymology

Etymology. For James S. Crampton, who made the field work in New Zealand possible.

Taxon Treatment

  • Kaim, Andrzej; Jenkins, Robert G.; Tanabe, Kazushige; Kiel, Steffen; 2014: Mollusks from late Mesozoic seep deposits, chiefly in California, Zootaxa 3861: 414-416. doi
Link to Plazi.org

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No known copyright restrictions apply on this formal expression of scientific knowledge. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for details.