| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Lutetiella
Taxonomy
Lutetiella was named by Kadolsky (2015). Its type is Lutetiella hartkopfi.
It was assigned to Hydrobiidae by Kadolsky (2015).
It was assigned to Hydrobiidae by Kadolsky (2015).
Species
L. conica, L. hartkopfi (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2015 | Lutetiella Kadolsky pp. 36 - 37 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
G. †Lutetiella Kadolsky 2015
show all | hide all
†Lutetiella conica Prévost 1821
†Lutetiella hartkopfi Kadolsky 2015
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Kadolsky 2015 | A hydrobioid genus with an ovate-conical shell reaching more than 7 whorls and more than 8 mm height; in the type species, the protoconch 1 has 0.4 – 0.6 convex whorls with a microsculpture of densely spaced, short, connected wrinkles without a preferred orientation; these wrinkles are strongest on the nucleus, decreasing on its later growth stages; a protoconch 2 is present, but sometimes not clearly distinguishable from the teleoconch; it ends at 1,25 – 1,75 whorls; its sculpture consists of growth lines and broad, rounded spiral ribs, both of which can be very weakly developed to absent, or strong. Teleoconch always with growth lines and fine, densely spaced spiral striae. First whorl nearly planispiral, the following descending rapidly, weakly to distinctly convex, rounded or with a blunt peripheral angle and a narrow and indistinct adapical ramp; sutures slightly appressed or deepened; last half whorl not or very weakly contracting and rarely stronly ‘pulled in’, but aperture contracts adapically; teleoconch sculpture of distant collabral growth lines with 2 – 5 smaller growth lines in the intervals; direction of growth lines on middle whorls slightly prosocline, near the adult aperture becoming opisthocyrt; apertural margin abapically protracted; aperture pear-shaped, slightly protracted adapically, with well developed parietal callus; columellar edge long and straight, joining the parietal margin at an angle or in a continuous arc; palatal margin not thickened, shell wall tapering towards palatal edge, inner shell layer often terminating before having reached the palatal margin; no lip or terminal varix; umbilicus narrow or closed, a pseudumbilicus is often formed by the raised columellar margin. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Kiessling 2004, Bush and Bambach 2015 | |||||