Laxtorum obscurum Tekin, 2020
publication ID |
https://doi.org/ 10.5252/geodiversitas2020v42a27 |
publication LSID |
urn:lsid:zoobank.org:pub:1A437774-B5BE-49F2-8DEF-D46F2790484A |
DOI |
https://doi.org/10.5281/zenodo.4495035 |
persistent identifier |
https://treatment.plazi.org/id/C977E9D3-0777-4F5E-9E55-1DB51E89B925 |
taxon LSID |
lsid:zoobank.org:act:C977E9D3-0777-4F5E-9E55-1DB51E89B925 |
treatment provided by |
Felipe |
scientific name |
Laxtorum obscurum Tekin |
status |
sp. nov. |
Laxtorum obscurum Tekin , n. sp.
( Fig. 12K, L View FIG )
urn:lsid:zoobank.org:act:C977E9D3-0777-4F5E-9E55-1DB51E89B925
Laxtorum sp. A – Tekin 2002a: 194, 196, pl. 5, fig. 15.
HOLOTYPE. — Sample Orbuk-27, HU.JMB.0162 ( Fig. 12K View FIG ).
PARATYPE. — HU.JMB.0163 ( Fig. 12L View FIG ).
TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey.
ETYMOLOGY. — From the Latin obscurum , obscure, indistinct, due to its obscure inner structure of test.
OCCURRENCE. — Lower Jurassic, lower Sinemurian of Antalya Nappes, NE of Antalya City and Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey.
DIMENSIONS (based on two specimens, in µm). — Length of horn: 65-70 (holotype: 70, average: 67.5); Maximum length of test: 150- 160 (holotype: 150, average: 155); Maximum width of test: 90-100 (holotype: 90, average: 95).
DESCRIPTION
Test long, increasing in width gradually to the distal end, conical with four to five post-abdominal segments. Cephalis hemisphaerical with stout, needle-like and pointed apical horn. Thorax and rest of segments subtrapezoidal in outline. Strictures invisible at the surface of test. Surface of the test covered with thick silica layers. Cephalis and thorax with very rare pores, abdomen and the rest of test with large, subcircular to ellipsoidal pores and very rough surface.
REMARKS
This species has been compared to Laxtorum breve Tekin , n. sp. under the latter taxon. It can be differentiated from Laxtorum hemingense Whalen & Carter in Carter et al. (1998: 80 , pl. 25, figs 6-8, 13, 14, 24, 25; pl. 27, figs 5, 6, 16, 20) by having a test with a stout horn and indistinct circumferential ridges.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Genus |
Laxtorum obscurum Tekin
Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan 2020 |
Laxtorum
TEKIN U. K. 2002: 194 |