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Nuculana (Saccella) pakistanica
Taxonomy
Nuculana (Saccella) pakistanica was named by Eames (1951) [DISTRIBUTION: Eocene; Pakistan.]. Its type specimen is L. 79850, 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) pakistanica Eames p. 324 figs. pl. 9, figs. 11a, 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) pakistanica Eames 1951
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. E. Eames 1951 | Transversely oval, not very strongly inflated. Umbos small, low, not at
all prominent. Antero-dorsal and postero-dorsal margins practically straight, of almost the same length, at only a small angle to the horizontal. Anterior end moderately narrowly rounded. Ventral margin gently to moderately convex. Posterior end moderately bluntly pointed, rostrate, the rostrum being situated rather high up. Surface ornamented with prominent, very closely spaced, fine, concentric threads, which are of about the same width as their intervals; there are about 15 threads in mm. on the ventral portion of the holo- type, and they become gradually more closely spaced towards the umbos. Lunule indistinct. Escutcheon long and narrow, limited by a fine furrow. Siphonal region of shell broadly and gently excavated in contradistinction to the moderately convex median portion of the shell. Valve margins internally smooth. Traces of taxodont dentition are seen showing through the dorsal margins of the shell. |
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