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Sapindopsis anhouryi
Taxonomy
Sapindopsis anhouryi was named by Dilcher and Basson (1990). Its type locality is Nammoura (Anhoury collection), which is in a Cenomanian lagoonal/restricted shallow subtidal limestone in the Sannine Formation of Lebanon.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Sapindopsis anhouryi Dilcher and Basson |
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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.
†Sapindopsis anhouryi Dilcher and Basson 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. L. Dilcher and P. W. Basson 1990 | Stipular compound leaf consisting of three or four (rarely five) odd pinnately arranged alternate to subopposite leaflets. Leaflets (lobes) often slightly falcate, linear, measuring 14 x 0.9 cm (index=15) to elongate 5.6 x 0.8 cm (index=7). Leaflet length ranges from 5 to 14 cm (average=9.5, no.=21). Leaflets have similar sizes and form on individual specimens; average length of the central leflets 9.5 cm (no.=7); first leaflet length 9.2 cm (no.=4); and 9.0 cm for length of second leaflets (no.=4). There is a slight decrease in leaflet size successively from distal to proximal lateral leaflets. Leaflet margins entire, apex acute, base acute, and inequilateral. The terminal and distal two to three lateral leaflets decurrent along petiolules, rachis, and petiole. Leaves often consist of a terminal cluster of three leaflets. When four leaflets are present, the terminal pair of leaflets cluster together, and the other two lateral leaflets are alternate to subopposite. Preserved leaflet venation consists of a well-defined midrib (1/8-1/10 the diameter of the leaflet width); numerous secondary veins that branch alternatively and suboppositely from the midrib at acute angles (15-20 degrees), secondary veins more or less parallel to each other, the angle of their attachment to the midrib broadens toward the leaflet apex, and the secondary veins course more or less straight until they join sub- and superadjacent secondary veins that form a conspicuous intramarginal vein near the leaf margin. Secondary veins slightly decurrent on the midrib. Intersecondary veins common, parallel to secondary veins, branching before reaching intramarginal vein, defining three-to-five-sided elongate intercostal areas. Tertiary veins also form three-to-five-sided elongate intercostal areas. Intramarginal veins extend to the leaf apex and are often seen on the leaf lamina bordering the petiolules. A fine marginal vein present just internal to the leaflet margin, connected to both the leaflet margin and the larger intramarginal vein by numerous small tertiary veins at right angles to them. The petiole most frequently has conspicuous lateral lamina extending from the terminal leaflets the entire length of the rachis to the petiolar area; however, this lateral lamina becomes narrow and less conspicuous below the basal leaflet. Proximal portion of the petiole originating from an enlarged sheath-like tissue. The petiolar region is 1.3-3 cm long (average 1.8 cm, no.=5) x 0.1-0.2 cm wide (average 0.15 cm, no.=5). The petiole is longer from the basal leaflets to the sheath in those leaves having four leaflets than in those having three leaflets (2.5 cm vs. 1.3 cm). The basal portion of the petiole consists of an expanded sheath-like region that is 1.5-2.5 cm long (average 1.9 cm, no.=5) x 0.5-0.8 cm wide (average=0.7 cm, no.=5). The sheath extends free of the petiole forming very short stipule-like extensions. It joins with the petiole, is adnate to it, expanding laterally to a broad triangular sheath that ends squarely as if the leaf was deciduous. The venation of the sheath is a fine network (2.7-3 veins per mm) of subparallel veins forming a chevron pattern toward the center of the sheath. The leaves appear to have been deciduous; they are all broken free from the branch that bore them, with their basal sheath intact |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: Middle Cenomanian or 99.60000 to 93.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cenomanian | Lebanon (Jabal Lubnan) | Sapindopsis anhouryi (type locality: 32225) |