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Erosaria (Erosaria) kutaiana
Taxonomy
Erosaria (Erosaria) kutaiana was named by Beets (1983). It is a 3D body fossil. Its type locality is Kari Orang, Gelingseh Beds, Borneo, which is in a Miocene marine horizon in the Gelingseh Formation of Indonesia.
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Erosaria (Erosaria) kutaiana Beets pp. 28 - 29 figs. PI. 2, figs. 5-9 |
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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.
†Erosaria (Erosaria) kutaiana Beets 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. Beets 1983 | Shell of rather small size, not very convex dorsally, slightly convex ventrally, protracted anteriorly, with a slightly indented spire and node-like callosity. Right side sharply marginate and pitted; so are the anterior and posterior portions of the left side. Aperture narrower than in E. sabahensis Cox, 1948. Outer lip almost straight, flattened, declivitous near its anterior end, strongly curved to the left posteriorly, bearing 16 prominent teeth. Posterior half of inner Up convex, extending into a narrow ridge along the deeply cut posterior outlet; the anterior part of the lip terminating into an even stronger, well separated, long ridge. Fossula all but absent, defined by a couple of short inner teeth not close to the terminal ridge. Inner Up bearing 16 teeth and a secondary one between each pair of the three foremost teeth, the posterior of the secondary teeth only semidetached. The hindmost tooth close to the terminal ridge, the six teeth in front of it extending quite far on to the ventral surface of the shell. A l l teeth not reaching very far into the aperture. The species is perhaps closest to E. sabahensis Cox (1948, p. 32, pi. 3, figs. 7ab) which is, however, much bigger and has 24 outer lip teeth, while those of the inner lip do not reach so far on to the ventral surface. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Late/Upper Miocene or 11.60800 to 5.33300 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene | Indonesia (Kalimantan) | Erosaria kutaiana (type locality: 42289) |