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Nuculana (Saccella) hamata
Taxonomy
Nuculana (Saccella) hamata was named by Eames (1951) [DISTRIBUTION: Eocene; Pakistan.]. Its type specimen is L. 79843, a shell, and it is not a trace fossil.
Sister species lacking formal opinion data
N. alferovi, N. amuriensis, N. bathurstensis, N. borsonii, N. calkinsi, N. camelorum, N. castor, N. coelata, N. coloradoensis, N. complanata, N. corbetensis, N. corpulentoides, N. demissa, N. deshayesiana, N. dodona, N. dodsoni, N. duplicarina, N. equilateralis, N. evansi, N. fiski, N. inornata, N. kenyana, N. kittensis, N. minmiensis, N. mutuata, N. saffordana, N. securiformis, N. smirna, N. sulcellata, N. travisana, N. turgeo, N. tyrolensis, N. yunnanensis, N. pennula, N. compalana, N. slodkewitschi, N. parleacllli, N. taioma, N. turgeo, N. vadosa, N. smithvillensis, N. carinata, N. elliptica, N. perdita, N. perlonga, N. yatsushiroensis, N. meriani, N. duplicarina, N. fragilis, N. gnonom, N. nagaoi, N. wajampolkana, Saccella communis, Saccella miensis, Saccella panayensis, Saccella robusta, Saccella tumida
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Nuculana (Saccella) hamata Eames p. 324 figs. pl. 9, figs. 10a, b |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Nuculana (Saccella) hamata Eames 1951
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. E. Eames 1951 | N.Very small, of fairly uniform size and shape. Umbonal region moderately
prominent, rather broad, the umbos having been approximately median in position. Antero-dorsal and postero-dorsal margins gently descendent and of approximately the same length, the latter slightly concave, the former more or less straight. Ventral margin semicircular. Posterior end bluntly pointed, situated high up. Anterior end a continuation of the ventral margin, sometimes somewhat truncated, meeting the antero-dorsal margin in a rather obtuse angle, which in the internal moulds has a slight, thin, oblique, rectangular projection. The internal moulds also show an umbonally directed, claw-shaped projection from the junction of the postero-dorsal and posterior margins. One specimen shows traces of very fine, closely spaced concentric threads. All the moulds have elongate depressedareas dorsally, the anterior being a little smaller and more stiffly triangular in outline. There appear to have been six posterior hinge teeth and four or five anterior hinge teeth. Pallial sinus not observed. Valve margins internally smooth. |
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Sanchez Roig 1926, Kiessling 2004, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available