Redwood Lineage Emerges

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Author note.

Explore voice = Exploratory style. Very punchy. Personal, and lively using “me,” “you,” “us,” and “I” freely.

I want you to feel me right there with you. We use “I” and “me” and “us” without apology. If the Explain voice is a bridge, the Explore voice is the hike we take across it. It is lively, reflective, and sometimes a bit raw. It is the sound of a shared exploration where I lead you by the hand, but we both discover the view at the same time.

This is where I get to think out loud. Not with definitions, we aren’t just looking at the facts; we are looking at how they feel and what they mean for our lives. I’m talking to you about what I’ve found and what I’m still figuring out. It is engaging because it is real, and it is reflective because it is honest.

The goal is real advice and enjoyable reading. I want to land on something you can actually use. It’s about being direct, being punchy, and making sure that by the time we reach the end of the page, we’ve both found something worth keeping.

And now the piece.

Redwood Lineage Emerges

~95 Million Years Ago (+/- 5 million)

Tall, fire-resistant, long-lived conifer specialization.

These trees descend from a line that was already ancient when dinosaurs dominated the land. During the age of dinosaurs, the lineage that would become modern coast redwoods separated from other conifers.

Redwoods belong to Cupressaceae (defined by scale-like leaves and fused woody cones). Within that family, they evolved exceptional height through efficient vascular transport, thick tannin-rich bark resistant to fire and insects, and the ability to sprout clonally. Coastal redwoods, in particular, also take advantage of fog-assisted water uptake.

Pictured: Sequoia sempervirens. This coastal redwood species emerged about 25 million years ago during the Miocene era. This picture was taken in Armstrong Redwoods State Natural Reserve near Guerneville, California.

Here's the key idea. The modern coast redwood species is about 25 million years old, but its lineage reaches back roughly 100 million years into the age of dinosaurs.

Finally, the core takeaway. This coastal redwood species emerged about 25 million years ago during the Miocene era. The redwood lineage emerged during the age of dinosaurs about 95 million years ago.

That Science Story,

was first published on TST 2 months ago.

The flashcard inspired by it is this.

Front: In evolution, what two terms refer to the modern form the ancestral branch?

Back: Species and lineage

All this is part of the broader TST project.

Tidbits are written to stand alone, but they are also designed to interlock—forming a research layer that supports deeper synthesis.

By keeping editions identifiable and research reusable, the project remains coherent even as its thinking evolves.

The end!