Coniferophyta

A fossil-informed synthesis relates extant conifer phylogeny to a much richer extinct record; it supports a sampled evolutionary framework but not a precise origin or uninterrupted global range for Coniferophyta.

Coniferophyta is displayed at 300–0 Ma only as a conservative review-bounded fossil-to-living navigation range: the source says the conifer record spans more than 300 million years, not that 300 Ma is an exact origin or specimen-level FAD.

Leslie et al. assembled an age-calibrated phylogeny sampling about 80% of living conifer species to compare sampled hemispheric clades; this molecular tree is not a complete total-group taxonomy, direct ancestor sequence or fossil occurrence ledger.

The sampled living conifer tree contains broadly Northern- and Southern-Hemisphere lineages and supports a modelled contrast in their evolutionary dynamics; the result does not establish complete present or past distributions for Coniferophyta.

The cited conifer analysis uses molecular sequences and fossil calibrations rather than a clade-wide morphological matrix; this profile therefore withholds universal leaf, cone and body-form traits instead of converting calibration fossils into body-character observations.

Leslie et al. discuss broad climatic and habitat contrasts around sampled living lineages but do not measure one diet, habitat, growth form, body-size distribution or ecological guild for all Coniferophyta; those profile fields remain explicitly ungeneralized.