The tail of the Ordovician fish Sacabambaspis

Research output: Contribution to journalArticle

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The tail of the Ordovician fish Sacabambaspis. / Pradel, A; Sansom, Ivan; Gagnier, PY; Cespedes, R; Janvier, P.

In: Biology Letters, Vol. 3, No. 1, 01.01.2007, p. 72-75.

Research output: Contribution to journalArticle

Harvard

Pradel, A, Sansom, I, Gagnier, PY, Cespedes, R & Janvier, P 2007, 'The tail of the Ordovician fish Sacabambaspis', Biology Letters, vol. 3, no. 1, pp. 72-75. https://doi.org/10.1098/rsbl.2006.0557

APA

Pradel, A., Sansom, I., Gagnier, PY., Cespedes, R., & Janvier, P. (2007). The tail of the Ordovician fish Sacabambaspis. Biology Letters, 3(1), 72-75. https://doi.org/10.1098/rsbl.2006.0557

Vancouver

Pradel A, Sansom I, Gagnier PY, Cespedes R, Janvier P. The tail of the Ordovician fish Sacabambaspis. Biology Letters. 2007 Jan 1;3(1):72-75. https://doi.org/10.1098/rsbl.2006.0557

Author

Pradel, A ; Sansom, Ivan ; Gagnier, PY ; Cespedes, R ; Janvier, P. / The tail of the Ordovician fish Sacabambaspis. In: Biology Letters. 2007 ; Vol. 3, No. 1. pp. 72-75.

Bibtex

@article{9b07c452a3214599b96a5e31e96eb86a,
title = "The tail of the Ordovician fish Sacabambaspis",
abstract = "The tail of the earliest known articulated fully skeletonized vertebrate, the arandaspid Saca-bambaspis from the Ordovician of Bolivia, is redescribed on the basis of further preparation of the only specimen in which it is most extensively preserved. The first, but soon discarded, reconstruction, which assumed the presence of a long horizontal notochordal lobe separating equal sized dorsal and ventral fin webs, appears to have considerable merit. Although the ventral web is significantly smaller than the dorsal one, the presence of a very long notochordal lobe bearing a small terminal web is confirmed. The discrepancy in the size of the ventral and dorsal webs rather suggests that the tail was hypocercal, a condition that would better accord with the caudal morphology of the living agnathans and the other jawless stem gnathostomes.",
keywords = "Ordovician, Arandaspida, caudal fin, Vertebrata",
author = "A Pradel and Ivan Sansom and PY Gagnier and R Cespedes and P Janvier",
year = "2007",
month = jan,
day = "1",
doi = "10.1098/rsbl.2006.0557",
language = "English",
volume = "3",
pages = "72--75",
journal = "Biology Letters",
issn = "1744-9561",
publisher = "The Royal Society",
number = "1",

}

RIS

TY - JOUR

T1 - The tail of the Ordovician fish Sacabambaspis

AU - Pradel, A

AU - Sansom, Ivan

AU - Gagnier, PY

AU - Cespedes, R

AU - Janvier, P

PY - 2007/1/1

Y1 - 2007/1/1

N2 - The tail of the earliest known articulated fully skeletonized vertebrate, the arandaspid Saca-bambaspis from the Ordovician of Bolivia, is redescribed on the basis of further preparation of the only specimen in which it is most extensively preserved. The first, but soon discarded, reconstruction, which assumed the presence of a long horizontal notochordal lobe separating equal sized dorsal and ventral fin webs, appears to have considerable merit. Although the ventral web is significantly smaller than the dorsal one, the presence of a very long notochordal lobe bearing a small terminal web is confirmed. The discrepancy in the size of the ventral and dorsal webs rather suggests that the tail was hypocercal, a condition that would better accord with the caudal morphology of the living agnathans and the other jawless stem gnathostomes.

AB - The tail of the earliest known articulated fully skeletonized vertebrate, the arandaspid Saca-bambaspis from the Ordovician of Bolivia, is redescribed on the basis of further preparation of the only specimen in which it is most extensively preserved. The first, but soon discarded, reconstruction, which assumed the presence of a long horizontal notochordal lobe separating equal sized dorsal and ventral fin webs, appears to have considerable merit. Although the ventral web is significantly smaller than the dorsal one, the presence of a very long notochordal lobe bearing a small terminal web is confirmed. The discrepancy in the size of the ventral and dorsal webs rather suggests that the tail was hypocercal, a condition that would better accord with the caudal morphology of the living agnathans and the other jawless stem gnathostomes.

KW - Ordovician

KW - Arandaspida

KW - caudal fin

KW - Vertebrata

U2 - 10.1098/rsbl.2006.0557

DO - 10.1098/rsbl.2006.0557

M3 - Article

C2 - 17443969

VL - 3

SP - 72

EP - 75

JO - Biology Letters

JF - Biology Letters

SN - 1744-9561

IS - 1

ER -