Study deck for LAB FINAL Flashcards
Angular Disconformities (show w/ hands too)
formed when underlying beds (which were horizontal) were tilted, then eroded flat, followed by new horizontal beds depositing on top. / The old & new beds meet at an angle
Disconformities (show w/ hands too)
A stop in deposition of sedimentary beds, then new sedimentary beds are laid / often includes erosion of underlying beds
Nonconformities (show w/ hands too)
The one where there’s like a dike in the rock record / separates igneous or metamorphic rocks from sedimentary strata / associated w/ erosion events.
Quick definition of Transgression and Regression.
T - Rising sea level / R - lowering sea level
Show what transgression and regressions look like.
T = water and land (kinda like a beach) / R - Water between lands (top & bottom) like this sign <
Why extinction of Stromatolites? Show what they look like (w/ hands)
New organisms preyed on them / ⁓⁓⁓⁓ on top of each other basically
Foraminifera look like? (w/ hands)
uhh little ovals some with irregular shaped ovals
Why Trilobites named that?
Have 3 body parts - head / body / tail
What is the name of the head, body, and tail of trilobite?
H - Cephalon / B - Thorax / T - Pygidium
What are Eurypterids?
Sea scorpions.
Symmetry in articulate Brachiopods? (show w/ hands)
Perpendicular to the hinge
Symmetry in inarticulate Brachiopods? (show w/ hands)
Parallel to the hinge.
How were the lines of a Rugose Coral formed?
The lines show the growth of the coral, why it gets bigger (growth)
What are 2 kinds of coral under Rugose Coral?
Solitary and Colonial corals
What do solitary and colonial corals look like?
S - look like a horn / C - like a rock or similar shape w/ holes
What do Scleractinia corals look like? What are they made of?
White coral but w/ holes / Calcite but an unstable version called Aragonite.
What do Halysites look like? AKA?
Churros together, some broken, brown color / Chain Coral
What do Favosites look like? / AKA?
A bunch of tubes together that go white from top to dark at bottom or all dark / Honeycomb Coral
Two types of Bryozoans?
Stick shape and Fenestrate (lacy)
What do the stick shaped and Fenestrate Bryozoans look like?
SS- Looks like a stick w/ holes or pricks // F - Rock looking w/ like laces on a football and then rock w/ woosh and curve.
Identify Nautiloid Cephalopods. How they move w/ heavy shell?
Look like squid w/ shell // they have tube that helps w/ buoyancy
Identify ammonie cephalopods. What do sutures do?
Squid w/ a shell but w/ ZIG ZAG pattern // Sutures help the shell have a strong bond
Advantage of zig zag on Ammonoid Cephalopod shell?
Offers stronger bond for shell, making it harder to break
Give info on Belemnites
Cephalopods related to squid / octopus // has internal shell like a Skelton to protect organs
Nickname and look of Crinoids?
Nickname sea lillies // In the lab they were small tube pieces
3 groups of Cephalopods? What cephalopod has internal shell?
Nautiloid / Ammonoid / Belemites /// Belemites
What Blastoids Info?
Nickname sea buds / Looks like ball w/ sea star wrap on top / Radial symmetry
Symmetry and where mouth & anus of reg urchin?
Radial symmetry / Mouth at bottom - anus at top
Symmetry and where mouth & anus of Heart Urchin? (irregular)
Radial & Bilateral symmetry / Anus at back - mouth at front
Identify Graptolites
Upside down umbrella uhh like moss yk but floating underwater
Identify Astraeospongia and why it is named that
Ball with little stars on it / Sponge is made of starshaped pieces
difference of clams and oysters?
Clams symmetry parallel to hinge. Oysters are asymmetrical / Oyster have less scars than Bivalve
Where pallial line and pallial sinus on Bivalves.
If the hinge is at top PS on bottom left and PL on bottom right.
Identify Gastropods and direction of spiral angle.
Like a cone but its built w/ like smooth rocks and there’s a little slug thing on top. / Dextral or clockwise.
Define synapsid
1 hole behind the eye on each side of skull
Define anapsid.
NO hole behind the eye on each side of skull
Define diapsid.
2 holes behind the eye on each side of skull
Identify Skull of Dimetrodon.
It looks a T rex or carnivorous one.
Identify Skull of Helicorprion.
The shark w/ a weird jaw. Its a JAW!!!!
Identify Skull of Smilodon. What is it?
Sabretooth cat. / Skull w/ two big tooths
Identify Skull of Terror Bird.
The bird looking one with a curled tips at the beak.
