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Lainodontinae
Taxonomy
Lainodontinae was named by Gheerbrant and Astibia (2012). It is not extant.
It was assigned to Zhelestidae by Gheerbrant and Astibia (2012) and Martin et al. (2015).
It was assigned to Zhelestidae by Gheerbrant and Astibia (2012) and Martin et al. (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 2012 | Lainodontinae Gheerbrant and Astibia |
| 2015 | Lainodontinae Martin et al. |
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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.
Subfm. †Lainodontinae Gheerbrant and Astibia 2012
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G. †Labes Pol et al. 1992
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†Labes garimondi Pol et al. 1992
†Labes quintanillensis Pol et al. 1992
G. †Lainodon Gheerbrant and Astibia 1994
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†Lainodon orueetxebarriai Gheerbrant and Astibia 1994
†Lainodon ragei Gheerbrant and Astibia 2012
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Gheerbrant and H. Astibia 2012 | Primitive eutherians most closely related to “Zhelestidae” in the robust dental morphology with special- ized crushing-grinding function as illustrated by the cusps inflated at the base, developed horizontal wear pattern, lower molars with large and wide talonid, low trigonid, and large hypoconid, upper molars with protocone inflated mesio-distally and large protofossa. They also share with “Zhelestidae”: lower molars with the paraconid more or less lingually situated and hypoconulid more or less appressed to entoconid; upper molars and dP5/ with stylar shelf and stylar cusps reduced, especially in front of the paracone (parastylar lobe absent), preparacrista reduced, paracone and metacone deeply separated, conules close to paracone and metacone, paracingulum reduced (narrow). Differs from most known “Zhelestidae”, and in particular Late Cretaceous Asian taxa, by (p: primitive; d: derived):
– Lower molars: trigonid moderately compressed mesio-distally (but similar to the most primitive Asian zhelestids) (p); paraconid small, reduced transversely (d); protoconid much larger and higher than metaconid, being the predominant cusp of the trigonid (d); weak exodaenodonty (d); labial profile of protoconid slightly concave (d); absence of postcingulid (p ?). – Upper molars and dP5/: preparacrista, postmetacrista, stylar shelf and stylar cusps (e.g., stylocone, parastyle) noticeably reduced (d); paracone and paraconule shifted labially with respect to metacone and metaconule (d); paracone and metacone remarkably divergent (d); conules with reduced internal crest; protocone low and raised vertically (p); and lingual cingulum absent (p). |
Measurements
No measurements are available
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| Source: subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Carroll 1988, Ji et al. 2002, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Kimmeridgian to the top of the Early/Lower Maastrichtian or 155.70000 to 66.00000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian | Turkey | Labes atramentosa (173369) | |
| Kimmeridgian - Early/Lower Tithonian | Romania | Labes atramentosa (201710 201711) | |
| Late/Upper Kimmeridgian | Bulgaria | Labes atramentosa (215208) | |
| Tithonian | Turkey | Labes atramentosa (173370) | |
| Late/Upper Tithonian | Italy | Labes atramentosa (196863) | |
| Berriasian | Turkey | Labes atramentosa (173371) | |
| Late/Upper Campanian | Spain (Castilla y Leon) | Lainodon new species , Lainodon orueetxebarriai, Labes sp., Theria indet. A (28406) | |
| Middle Campanian - Late/Upper Campanian | France (Languedoc-Roussillon) | Mammalia indet. (74660) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | France (Languedoc-Roussillon) | Labes garimondi (48870) | |
| Early/Lower Maastrichtian | Spain (Castilla y Leon) | Labes quintanillensis (61321) |