SAGE MUSEUM · DINOSAURS & DEEP TIME
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ROOM 03
Life Conquers the Land
Forests, Fishes and the First Four-Legged Worlds
7 SPECIMENS ·
3 INTERPRETIVE THREADS
Forests, Fishes and the First Four-Legged Worlds.
Interpretive threads: Challenges of Life on Land · Forests of Unfamiliar Trees · Carboniferous Arthropod Lungs
INTERPRETIVE THREADS
SPECIMENS & EVIDENCE
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Early lycopsid — Leclercqia ?complexa
Early to Middle Devonian · Leclercqia complexa is documented from Devonian rocks, including Early Devonian Emsian occurrences and classic Middle Devonian material.
stem and leaves
comparative_exact_taxon_visual
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Early vascular plant — Psilophyton crenulatum
Early Devonian — Emsian · Early Devonian, including earliest Emsian material.
stem fossil
comparative_exact_taxon_visual
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Progymnosperm — Archaeopteris hibernica
Late Devonian · Late Devonian.
leaf
comparative_exact_taxon_visual
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Lycopsid tree — Lepidostrobus sp.
Carboniferous · Carboniferous; no more precise age is assigned to the Smithsonian genus-level specimen here.
spore-bearing cone
comparative_exact_taxon_visual
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Medullosan seed fern — Alethopteris serlii
Late Carboniferous — Pennsylvanian · Late Carboniferous.
leaf fragment
comparative_exact_taxon_visual
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Early fern — Rhacophyton incertum
Late Devonian · Upper Devonian.
stems and leaves
Representative evidence-type visual; not the exact specimen.
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Cricket with skeletonized leaf — Gryllidae indet. and Cardiospermum coloradense
Eocene — comparative object · Green River Formation balloon-vine material is Eocene, approximately 48.5 to 53.5 million years old.
insect and damaged leaf association
Representative evidence-type visual; not the exact specimen.