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Libocedrus microformis
Taxonomy
Libocedrus microformis was named by Paull and Hill (2009) [Specimens examined in detail (48). RPE-65, 66, 68, 69, 71, 161, 191–195, 197, 198, 271, 272, 351–355, 461, 481–483, 522, 523, 621, 624, 641, 642, 644, 645, 661–645, 701–706, 721–724, 801. There are many other similar specimens from Regatta Point. These were chosen to represent the morphological variability.]. It is considered to be a form taxon. Its type specimen is Holotype: RPE-641, stored in the School of Earth and Environmental Sciences, University of Adelaide, South Australia., a sterile axis (Cuticle), and it is a compression fossil. Its type locality is Regatta Point Eocene, which is in an Eocene fluvial-deltaic mudstone/sandstone in Australia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Libocedrus microformis Paull and Hill p. 385 figs. 4, 5 |
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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.
†Libocedrus microformis Paull and Hill 2009
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. Paull and R. S. Hill 2009 | Subopposite to alternate branchlets arising in same plane. Leaves almost monomorphic and very small. Lateral leaves slightly bilaterally flattened, bases slightly papillate. Lateral and facial leaves imbricate, keeled, apices bluntly acute, margins frilled. Facial leaves reaching and generally overlapping facial pair above. Amphistomatic. Stomata close to leaf margins, not in clearly defined grooves, fewer on ventral leaf surfaces. Florin rings smaller than those of extant species, high ridged, lobed, with associated round papillae. |
Measurements
No measurements are available
No ecological data are available
Age range: Early/Lower Eocene or 55.80000 to 48.60000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Eocene | Australia (Tasmania) | Libocedrus microformis (166741 type locality: 166977) |