Invertebrates Lab 9

Front 1

arthropoda

4 sublvl

Back 1

phylumn

4 subphylumns:
1. trilobita
2. uniramia - mili+centi + insects
3. crustacea - crabs/lobs
4. chelicerata - lobsterish trilos

Front 2

trilobita
(lvl, 6 parts)

Back 2

subphylum of arthropoda

6 parts:
1. cephalon - head
2 thorax - body
3 pygidium - tail
4 axial lobe - central lobe down body
5 pleural lobes - 2 lobes on sides down body
6 glabella - bulb top cephalon

Front 3

chelicerata
(2 main body divisions, pincers, 3 sublvl)

Back 3

subphylum of arthropoda

includes all w/ 2 part body:
1. prosoma - head + fused thorax
2. opisthosoma - abdomen

3. chelicerae - small pincers used to shred food near mouth

sub lvls:
class merostomata
- subclass eurypterida -trilolobs
- subclass xiphosura -hshcrab

Front 4

eurypterida

lvl, look, tail

Back 4

sublcass merostomata, under subphy cherlicerta

look like skinny trilobites w/out lobes

may have pointed telson

Front 5

xiphosura

what, time

Back 5

subclass of merostomata, under subphy cherlicerta

horshoe crabs

carb - rec

Front 6

subphylum uniramia

lvl, 3 types

Back 6

under phylum arthropoda

mili + centipeds, insects

Front 7

myriapoda

lvl, 2 kinds and chars

Back 7

class under subph uniramia

centi and milipedes

centipeds - poisonous

milipedes - more legs

Front 8

Mullusca

lvl, 2 terms

Back 8

phylumn

all have distinct head and tail

radula - row of teeth
mantle - covering which may secrete shell

Front 9

gastopoda

lvl, deformity, look

Back 9

class under phy molusca

anus located above head - faces forward

generally look like snails, includes squids. all have large "foot" for locomotion

spirally shells

Front 10

bivalvia

lvl, semmetry, 4 terms

Back 10

class under mullusca

symmetrical along HINGE LINE, not generally median line

ligament - holds shells open
foot - used to creep or burrow
byssal threads - used by some to attach to surfaces
palial line - few mm from outer edge on ventral side, indicates mantle attahcment

Front 11

rudists

Back 11

bizarre bivalve where lower valve is a cone, upper is a lid

Front 12

cephalopoda

Back 12

class of molusca phy

chars:
large eyes
arms
tetacles w/ suction cups
beak like jaws

3 subclasses
1. nautiloidea
2. ammonoidea
3. coleoidea

Front 13

nautiloidea

lvl, 2 terms

Back 13

subclass of cephalopod

shell looks like coiled rope, simple sutures

septa - are plates dividing different cavities

siphuncle - connects all cavities, used for boyancy

Front 14

ammonoidea

Back 14

sutures more intensely wavy than that of nautiloid

goniatic - some folding of wave
ceratic - regular folding of waves
ammonitic - tons of folding

Front 15

coleoidea

Back 15

subclass of cepholopods

squid, octopi, cuttlefish etc..

very reduced skeletons, rare fossils

Front 16

echinodermata

lvl, 5 chars

Back 16

phylumn inc stars, urchins, crinoids, blastoids

1 endoskeleton - large number of pourous calcite plates
2 unique watervascularsys - used for loco, rspiration, and food
3 madreporite - opening for wvs
4 tube feet - extensions of wvs
5 ambulacra - pores from which tube feet emerge

Front 17

echinoidea

lvl, 2 types, look

Back 17

class of subphyylum echinozoa - sea urchins, sand dollars

regular - anus on top of animal
irregular - anus underneath/side

covered w/ spines

Front 18

crinoidea

4 terms

Back 18

class, subphy crinozoa

calyx - body
arms
column - long stem
holdfast - end of column attaches to substrate

Front 19

blastoids

Back 19

look like crinoids w/ more grooved wanton shape

Front 20

stelleroidea

Back 20

class sea starts - mobile echinoderms

Front 21

hemichordata -> graptolithina

Back 21

phylumn -> class

similar to echinoderms but have gills and short dorsal nerve chord

small tube dwelling animals

autotheca - tube dwellings strung together
nema - a thread of autothecas
strip - colony in branch like structure
rhabdosome - multi branch colony