The Abelisaurid Tooth

"I ate an abelisaurid tooth."

Dr. Adrian Mercer looked up from his notes.

He was a physician-scientist, an MD/PhD specializing in comparative neurobiology and visual neuroscience. Much of his research involved reconstructing sensory capabilities from anatomical evidence, including those of extinct animals.

He placed his pen on the desk.

"You ate it?"

"Yes."

"An actual fossilized tooth?"

"That's what I said."

"Interesting. Not the conventional approach to paleontology, but I'm interested. What happened?"

"I experienced how it saw."

"How what saw?"

"The dinosaur."

Mercer leaned forward.

"You're saying you experienced the animal's vision?"

"Yes. Through its eyes. Or whatever it was that let me see."

"Can you describe the experience?"

"Everything was blue."

"The sky?"

"No. Everything. There was a tint in the air itself, but it wasn't like looking through blue glass."

"Explain that distinction."

"Imagine that distance has a color. Not that things farther away look blue, but that the actual space between things has color. The depth was completely visible."

"Visible how?"

"I could perceive the space. All of it. There was depth everywhere, even where there was nothing."

"That's particularly interesting."

"Why?"

"Because you're describing something beyond ordinary atmospheric perspective. Humans already use color and haze to estimate distance, but you're describing the impression of a three-dimensional volume rather than a collection of objects."

"Exactly."

Mercer opened a fresh page in his notebook.

"Did you know anything about abelisaurid eyesight before this?"

"Nothing."

"Did you know dinosaurs might have possessed visual sensitivities different from ours?"

"No."

"That doesn't establish the source of the experience, but it makes the chronology worth documenting. Tell me something else. Were you watching the dinosaur, or were you seeing from its perspective?"

"Through its eyes."

"As though you occupied its body?"

"Yes."

"Did you see its head?"

"Not directly."

"Then how did you know what you looked like?"

"My shadow."

Mercer stopped writing.

"Your shadow?"

"Yes."

"Describe it."

"It looked like I had feathers on the back of my head."

"Feathers?"

"A patch. Like a little ruffle."

"Where exactly?"

"The very back of the head. Down near the top of the spine."

"The occipital-nuchal region. Where the skull transitions into the neck?"

"Yes. Right there."

He stood and walked to a skeletal reconstruction mounted beside the examination cabinet. Its skull was broad and deep, with two prominent horns above the eyes.

"That's a surprisingly specific location. Abelisaurids are generally reconstructed with scaly skin. We have no confirmed feather impressions from them."

"Okay."

"But we also don't possess complete skin impressions from every part of their heads and necks."

"So they might have had feathers?"

"It's possible in the broad anatomical sense, although there's no direct evidence supporting a localized tuft. That's why I want to understand exactly what you saw."

"Ask."

"Was it a continuous covering, like a mane?"

"No."

"A crest along the skull?"

"No."

"Several long feathers, or a dense patch of short ones?"

"A few feathers. Maybe five to ten."

"How long?"

"Six inches, maybe."

"Fifteen centimeters?"

"About that."

"Did they extend upward?"

"More backward. They tufted out a little."

"Interesting. Very interesting."

"What?"

"A small cluster of elongated feathers at the nape is quite different from the large horns and bony structures we know from certain abelisaurids. There are feathered theropods, of course, but the exact feature you're describing has never been established for an abelisaurid."

He returned to his chair but didn't sit.

"Nobody really knows what they looked like, though, right?" I asked.

"Not completely. We can reconstruct their skeletons and some skin surfaces. Their living appearance remains partly uncertain."

"And nobody knows how they saw?"

"Not subjectively. We can estimate some visual capabilities from skull anatomy and compare them with living birds and crocodilians. We cannot reconstruct what the world actually looked like to an abelisaurid."

"So you can't say it didn't look blue."

"Correct. But I also can't say it did."

"Fair enough."

Mercer sat down.

"There's something else I find intriguing."

"What?"

"You've given me two unusual details. The first concerns perception. The second concerns anatomy. They are independent observations, at least as you've described them."

"And?"

"And I'd like to know which one you noticed first."

"The vision."

"Before the shadow?"

"Yes."

"Did you think you were a dinosaur when the vision began?"

"No. I was just seeing."

"When did you realize?"

"After I looked at the shadow."

"That distinction matters. You weren't initially trying to construct an image of a dinosaur. You report noticing an unfamiliar visual environment, followed by an unfamiliar body silhouette."

"Right."

He folded his hands on the desk.

"I need to be careful here. Eating fossil material has no known mechanism for transmitting an animal's memories. I can't verify that what you experienced was the dinosaur's vision."

"I didn't ask you to."

"I know. That's why I'm still asking questions."

For a moment, neither of us spoke.

Beyond the office window, afternoon sunlight stretched across the floor. The room contained several anatomical models, framed diplomas, and a glass cabinet holding comparative skull specimens.

Mercer glanced toward the dinosaur reconstruction.

Then back at me.

"Can I ask you something about the shadow?"

"Sure."

"Was the feather patch visible the entire time?"

"I think so."

"Did the individual feathers appear separate?"

"Yes."

"Did they move?"

I stared at him.

I hadn't thought about that.

"I don't remember."

"Try to recall the silhouette. Five to ten feathers, approximately six inches long, projecting from the back of the skull."

"Okay."

"Did they move when you moved your head?"

"They should have."

"That's not what I asked."

I looked at him again.

"You seem awfully interested."

"I am. There's a difference between remembering a static outline and remembering movement. One is a shape. The other is a sequence of observations."

"What's your point?"

"I'm trying to understand what you actually perceived, rather than what either of us assumes should have happened."

I closed my eyes.

The blue returned to me.

Not the color of the sky, but the color of distance itself. Layer after layer of transparent space, each occupying its own position in the world.

There were trees, but the space between them had dimensions I could almost feel. Nothing appeared flat. Even empty air seemed to possess shape.

And the shadow.

The little feathered patch.

I remembered something else.

"They moved."

Mercer didn't answer immediately.

"With your head?"

"No."

"Was there wind?"

"I don't remember wind."

"Then what made them move?"

I opened my eyes.

For the first time since entering his office, I wasn't particularly interested in the dinosaur anymore.

"I don't know."

Mercer studied me for several seconds.

Then he slowly removed his glasses.

"One last thing. When the feathers moved, were you moving too?"

I looked toward the window.

"No."

"Are you certain?"

"Yes."

"How can you be certain?"

Because I remembered it now.

I had been standing perfectly still.

And the shadow had slowly raised its head.

Mercer said nothing.

His gaze had moved past my shoulder, toward the wall behind me.

"Doctor?"

He didn't respond.

"Dr. Mercer?"

He raised one finger, asking for silence.

Then, very carefully, he turned off the overhead examination light.

The afternoon sun still illuminated the room.

My shadow remained on the wall.

Mercer was watching it.

And for the first time during our interview, he stopped asking questions.