Phylum: Mollusca (Mollusks)

Class:  Cephalopoda
Subclass: Ammonoidea 
(ammonites)

Cretaceous Period (click for Pennsylvanian Period)
Formation:  Eagle Ford Period: Cretaceous - Cenomanian stage  (c. 95 mya) Location: Denton co., Tx Collected 2007.	Formation:  Eagle Ford Period: Cretaceous - Cenomanian stage  (c. 95 mya) Location: Denton co., Tx Collected 2007.
Ammonite split showing original shell material and inner chambers.      [+] Formation: Eagle Ford  Period: Cretaceous - Turonian stage (c. 95 mya) Location:  Dallas, Tx.	Formation:  Eagle Ford Period: Cretaceous - Turonian stage  (c. 95 mya) Location: Dallas co., Tx.
Metoicoceras ammonites Formation:  Eagle Ford Period: Cretaceous - Turonian stage (c. 95 mya) Location: Dallas co., Tx Collected Feb. 24, 2007.	Metoicoceras? (found in nodule)   Formation: Eagle Ford Period: Cretaceous - Turonian stage (c. 95 mya) Location:  Dallas, Tx.
ammonite Formation: Pawpaw Period: Cretaceous - Albian stage (c. 100- mya) Location: Tarrant co., Tx Collected July 4, 2008.
Engonoceras serpintinum ammonite Formation:  Pawpaw Period: Cretaceous - Albian stage (c. 100- mya) Location: Denton co., Tx Collected Sep. 8, 2007.	Drakeoceras          ?   Formation:  Fort Worth? Period: Cretaceous - Albian stage (c. 100 mya) Location: Tarrant co., Tx Collected Sep. 9, 2007.
Engonoceras serpintinum ammonite Formation: Pawpaw Period: Cretaceous - Albian stage (c. 100- mya) Location: Tarrant co., Tx Collected March 16, 2008.	Submantelliceras brazoense Formation:  Del Rio  Period: Cretaceous - Albian stage (c. 100+ mya) Location: McLennan co.,Tx Collected Nov. 17, 2007.
Engonoceras serpintinum ammonites & Leptostyrax shark tooth Formation:  Pawpaw Period: Cretaceous - Albian stage (c. 100 mya) Location: Tarrant co., Tx Collected 2006.	Engonoceras serpintinum ammonites Formation:  Pawpaw Period: Cretaceous - Albian stage (c. 100 mya) Location: Tarrant co., Tx Collected Feb. 18, 2007.
Engonoceras stolleyi? ammonite Formation:  Goodland Period: Cretaceous - Albian stage (c. 105 mya) Location: Denton co., Tx Collected Aug. 18, 2007.	ammonites Formation: Duck Creek  Period: Cretaceous - Albian stage (c. 103 mya) Location: Tarrant co., Tx Collected Dec. 15, 2007.
Engonoceras ammonite.     [Scanned pic] Formation:  Goodland Period: Cretaceous - Albian stage (c. 100+ mya) Location: Tarrant co., Tx	Engonoceras  ammonite (found by Roz Morgan) Formation:  Glen Rose Period: Cretaceous - Albian stage (c. 110+ mya) Location: Somervell co., Tx
Drakeoceras? Formation:  Fort Worth? Period: Cretaceous - Albian stage (c. 101 mya) Location: Fort Worth, Tx	Mortoniceras equidstans ammonite Formation: Duck Creek  Period: Cretaceous - Albian stage (c. 103 mya) Location: Tarrant co., Tx
Mortoniceras ammonite   Formation: Duck Creek  Period: Cretaceous - Albian stage (c. 103 mya) Location: Tarrant co., Tx	Drakeoceras           ? Formation:  Fort Worth Period: Cretaceous - Albian stage (c. 101 mya) Location: Tarrant co., Tx Collected July 7, 2007.
Oxytropidoceras powelli ? Formation:  Goodland Period: Cretaceous - Albian stage (c. 105 mya) Location: Tarrant co., Tx	Oxytropidoceras (Adkinsites) diazi Formation:  Duck Creek (also in Kiamichi fm.) Period: Cretaceous - Albian stage (c. 103 mya) Location: Tarrant co., Tx
Formation:  Goodland? Period: Cretaceous  (c. 100+ mya) Location: Tarrant co., Tx.	Formation:  Goodland Period: Cretaceous - Albian stage (c. 100+ mya) Location: Tarrant co., Tx
A cache of dwarf ammonites found close together.  At least 3 different species here?. Formation: Duck Creek  Period: Cretaceous - Albian stage (c. 100+ mya) Location: Tarrant co., Tx.	Formation:  Goodland Period: Cretaceous - upper Albian stage (c. 100+ mya) Location: Denton co., Tx
Eopachydiscus  and Mortoniceras ammonites Formation:  Duck Creek & Goodland Period: Cretaceous - upper Albian stage  (c. 103 mya) Location: Tarrant co., Tx.	Eopachydiscus ammonite Formation:  Duck Creek Period: Cretaceous - upper Albian stage (c. 103 mya) Location: Tarrant co., Tx
Eopachydiscus ammonites Formation:  Duck Creek Period: Cretaceous - upper Albian stage (c. 103 mya) Location: Tarrant co., Tx	Eopachydiscus ammonite Formation: Duck Creek  Period: Cretaceous - Albian stage (c. 103 mya) Location: Tarrant co., Tx Collected March 2007.

Class:  Cephalopoda
Subclass:  Nautiloidea
(nautiloids)

Cretaceous Period:
a nautilus Formation:  Mainstreet (lower) or Pawpaw (upper) Period: Cretaceous  (c. 99 mya) Location: Tarrant co., Tx Collected 2007.	a nautilus Formation:  Grayson Period: Cretaceous  (c. 100- mya) Location: Denton co., Tx Collected Sep. 2, 2007.
ryncholite - nautiloid hood (beak) Formation:  Del Rio  Period: Cretaceous  (c. 100+ mya) Location: Waco, McLennan co.,Tx Collected Nov. 17, 2007.

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina (heteromorph ammonites)
Super family: Turrilitaceae 
Family:  Hamitidae 
Genus: Hamites

hamites Formation: Ozan Period: Late Cretaceous  Location: North Sulphur river, Tx. Collected Jan. 5, 2008.	hamites Formation: Ozan Period: Late Cretaceous  Location: North Sulphur river, Tx. Collected Jan. 5, 2008.
concretion of baculites & hamites Formation: Eagle Ford Formation, Britton shale  Period: Cretaceous  (c. 100- mya) Location:  Denton co., Tx.	hamites Formation:  Duck Creek Period: Cretaceous  (c. 100+ mya) Location: Tarrant co., Tx

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina (heteromorph ammonites)
Super family: Scaphitaceae 
Family:  Scaphitidae 
Genus: Scaphites

Scaphites hilli ? Formation:  Pawpaw Period: Cretaceous  (c. 100- mya) Location: Tarrant co., Tx Collected Nov. 14, 2008.

Scaphites subevolutus   Formation:  Del Rio  Period: Cretaceous  (c. 100+ mya) Location: McLennan co.,Tx Collected Nov. 17, 2007.

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina
Family:  Baculitidae 
Genus: Baculites

baculites segments   Formation: Ozan Period: Late Cretaceous  Location: North Sulphur river, Tx. Collected Jan. 5, 2008.	baculites Formation:  Del Rio  Period: Cretaceous  (c. 100+ mya) Location: McLennan co.,Tx Collected Nov. 17, 2007.
baculites segments Formation: Ozan? Period: Cretaceous  Location: North Sulphur river, Tx. Collected Nov. 12, 2005.	baculites Formation: Eagle Ford Formation, Britton shale  Period: Cretaceous  (c. 100 mya) Location:  Denton co., Tx. Collected 2007.

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina
Family:  Baculitidae 
Genus: Baculites

Class:  Cephalopoda
Subclass: Nautilodea
Order:  Orthocerida 
(orthocones)

Mooreceras? Formation: Finis shale, Graham Formation Period: Pennsylvanian (c. 300 mya) Location: Jack co., Tx.

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina (heteromorph ammonites)
Super family: Turrilitaceae 
Family: Turrilitidae
(turrilites)

Mariella          Formation:  Del Rio  Period: Cretaceous  (c. 100+ mya) Location: McLennan co.,Tx Collected Nov. 17, 2007.	Mariella worthensis  (Turrilites worthensis) Formation:  Pawpaw Period: Cretaceous  (c. 99 mya) Location: Tarrant co., Tx Collected March 25, 2007.
Mariella brazoensis  (Turrilites brazoensis) Formation: Grayson Period: Cretaceous  (c. 100 mya) Location: Denton co., Tx. Collected Aug. 18, 2007.