Paleontology Lab Final

Behavior that created them

Ichnofossils are classified based upon the:

Its original mineralogy

Recrystallized minerals

Replacement minerals

A mollusc shell may be preserved as:

has a mineralized skeleton

An organism is most likely to preserve if it:

Chamber Arrangement

Aperture Type

The following features are important for identifying Foraminifera to genus:

Size

Lateral Outline

The following features are important for identifying Ostracoda to genus

has a mineralized skeleton

An organism is most likely to preserve in the fossil record if it:

You would look for some of the qualities stated in the last few questions. Lateral outline, size, shape, chambers, aperture type, etc. By examining these qualities, we would most likely be able to successfully classify our specimen

Briefly describe the process you would use to identify a microfossil specimen to genus.

Scleractinia

Porifera

Which of the following orders of cnidarians are extant (alive today)?

Mineralogy of spicules

Morphology of spicules

Which of the following features are important for classifying fossil sponges into classes?

Surface texture

Presence of spines

Presence of an ala

Which of the following features are important for identifying Ostracoda to genus?

An illustration of the possible genealogical relationships among organisms

A phylogeny, or cladogram, is:

A structure used for feeding

Important for taxonomic classification of brachiopods

Present in both brachiopods and bryozoans

The lophophore is:

Scleractinia

Rugosa

The following groups contain BOTH colonial and solitary species:

There are several characteristics that can be used to classify foraminifera. One might classify what the shell is made of, the size, where their 'mouths' are located. how complex the shell is, or various other characteristics.

Describe the procedure you would use to identify a foraminifer OR and ostracod to genus.

Coleoides

Belemnites

Which of the following groups of cephalopods has an internal shell rather than an external shell?

position of the siphuncle

suture morphology

Which features are useful for telling nautiloids and ammonoids apart?

Deep infaunal

Infer the life habit of this bivalve: (bivalve with large pallial sinus, wide shell and smooth edges)

chitinous exoskeleton

jointed appendages

Which of the following features are characteristic of all arthropod groups?

biramous appendages

axial lobe

pygidium

Which morphological features are characteristic of trilobites?

orthocone nautiloid

Identify this polished fossil. (orthoceras fossil)

a nearly spherical shape

Echinoids that are epifaunal have:

True

Crinoids can be mobile.

pterobranchs

To which modern organisms are graptoloidea most closely related?