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Macaranga kirkjohnsonii
Taxonomy
Macaranga kirkjohnsonii was named by Wilf et al. (2023). Its type specimen is MPEF‐Pb 7993a,b, a leaf, and it is a compression fossil. Its type locality is Laguna del Hunco: quarry LH4, which is in a Ypresian crater lake siliciclastic in the Huitrera Formation of Argentina.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Macaranga kirkjohnsonii Wilf et al. p. 4 |
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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.
†Macaranga kirkjohnsonii Wilf et al. 2023
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Wilf et al. 2023 | Petiole insertion eccentrically peltate, well inside the margin. Blade ovate, untoothed, unlobed or incipiently lobed, symmetrical to asymmetrical. Base convex, rounded or slightly cordate; apex acute, not mucronate. Mid vein, first pair of secondary veins, and several minor secondary veins of the agrophic complex radiate directly from the petiole insertion with minimal offsets. Primary venation pinnate; secondary venation eucamptodromous to brochidodromous; secondaries usually 5–7, often forking well inside the margin. Basal secondary‐pair angle greater than or equal to the second pair; spacing between the first and second pair of secondaries less than or equal to that between the second and third pair. Agrophic veins simple and well‐developed. Tertiary veins mostly thick, strongly to weakly percurrent, variably angled, concentric around the petiole insertion, and moderately spaced. Marginal ultimate venation looped. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||