Fermí Pérez

Interested in Paleontology. Ammonites, Trilobites, and Earth sciences. Barcelona

[Fermí Pérez @Ferpertier]

No!! It's not a smiling frog!! 🐸😃 It's nearly a perfect rolled #trilobite Phacops! Devonian #FossilFriday #TrilobiteTuesday

[Dr. Rod Taylor @FossilRod]

#Trilobite body design showed some interesting modifications over their 250+ million year history. Harpes perradiatus, a #Devonian trilobite from Morocco, extended the cephalon margin as a bizarre filtering-feeding mechanism. #TrilobiteTuesday

image: https://t.co/Y7g2CQHJlv

[Maya Wei-Haas, Ph.D. @WeiPoints]

This is a trilobite eye. Every facet—or little nub—of the eye is a single crystal of calcite. But if trilobites' eyes were pure calcite they'd see the world in duplicates. Ever inventive, evolution found a way ... 1/x

[Barrufet del temps @MeteoBarrufet]

Aquest és un fantàstic exemplar de nàutil fossilitzat amb pirita. Segons el propietari, té una antiguitat d'uns 185 milions d'anys. La piritització consisteix en substituir amb sulfur de ferro (sofre + ferro) les parts dures o buides dels organismes morts. 📹 Yorkshire Fossil.

[John Moffitt 🌊🌊🧢 🇺🇦 @JohnRMoffitt]

A very rare Devonian trilobite from Oklahoma.

#TrilobiteTuesday

[Fermí Pérez @Ferpertier]

@SMTrust 🌀😀

[Dr. Rod Taylor @FossilRod]

This #TrilobiteTuesday I give you a nearly complete Paradoxides gracilis, a Cambrian trilobite from the Czech Republic. This beautiful beast is closely related to species found in Newfoundland and Morocco. (photo: @AMNH)

[History_of_Geology @Geology_History]

October 30, 1986, Luis W. Alvarez (1911-1988) of UC Berkeley wins the Nobel Prize in Physics 🥇 Together with his son, he promoted the "impact-theory" to explain the mass extinction 65 million years ago 🦖☄
https://t.co/YOGMGMdV1u

[American Museum of Natural History @AMNH]

By the end of trilobites' crawl through Deep Time, their species count—which once numbered in the thousands—had dwindled down to a precious few. All of the remaining species, like this 1.57-in- (4-cm-) Piltonia, belonged to a single order, the Proetida. #TrilobiteTuesday

[IGEO (CSIC-UCM) @IGeociencias]

Tabla cronoestratigráfica actualizada v2021/05
https://t.co/Bqknmqoj3p

[Pep Juárez Ruiz. @NitePep]

@SHNB_BSHNB @Ferpertier @MBCNSoller @MuseoGeominero

[Rudy Lerosey-Aubril @PlLife2]

#TrilobiteTuesday: YPM6657 (left & top right), holotype of Olenellus getzi & only known olenellid fossil with antennae (credit: @yalepeabody). This isolated, molted (no eyes) cephalon from the Rosella Fm. (BC) seems to preserve similar, but incomplete structures? How come?🤔🤔🤔

[American Museum of Natural History @AMNH]

Portugal’s Valongo Formation is renowned for the impressive sizes of its trilobites. The fossils unearthed here can reach up to 28 in (71 cm) in length! Pictured is a 17-in- (43-cm)-long Ogyginus forteyi trilobite, considered small by Valongo standards. #TrilobiteTuesday

[Instituto Geológico y Minero de España @IGME1849]

Según los modelos de Deriva Continental @NatGeo, los continentes se unirán en una nueva #PANGEA dentro de 250 millones de años. Quedarán -como mares interiores- algunos retazos del Atlántico y la Vieja Europa habrá sido empujada hacia latitudes polares. #IGME, #Geología

[Amane Tajika @amtajika]

イケメン学芸員（写真; @ammo_ammo_ammo）と世界トップクラスのアンモナイト展示を誇る三笠市立博物館に来ています.

[Dr. Rod Taylor @FossilRod]

Trilobites are known from their fossilized shells, but did you know they only covered their upper (back) surface? Some had a mouth shield called a hypostome, though; in this Paradoxides davidis trapezopyge, it's come off and is next to the tail. #TrilobiteTuesday @ManuelsRiver

[Pep Juárez Ruiz. @NitePep]

Massive accumulation of Dactylioceras from Schlaifhausen, interpreted. recently as a tsunamite @xiscoroig @SHNB_BSHNB @Ferpertier @MuseoGeominero @Pere_Miralles

[Dr. Rod Taylor @FossilRod]

Paradoxides davidis intermedius, the third P.d. #trilobite subspecies from @ManuelsRiver, Newfoundland. The rectangular pygidium (tail) is, as the name suggests, intermediate in shape between those of P.d. davidis and P.d. trapezopyge. #TrilobiteTuesday @NLtweets

[Fermí Pérez @Ferpertier]

A good one for #FossilFriday ☝️

[Pep Juárez Ruiz. @NitePep]

My last preparation. Tropaeum from UK. @SHNB_BSHNB @MBCNSoller @Pere_Miralles @Ferpertier @MuseoGeominero @FemoraleShells

[Fermí Pérez @Ferpertier]

A pretty natural Cymatoceras Sakalavus. Lower Cretaceous. Lower Albian 110 myo. Madagascar @NitePep #FossilFriday

[Fermí Pérez @Ferpertier]

@NitePep @FemoraleShells @Pere_Miralles @MBCNSoller @SHNB_BSHNB @MuseoGeominero I’ve got this beautiful one! Not as well prepared as yours, but pretty natural. @NitePep @FemoraleShells #FossilFriday